`yaml` is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of `yaml` on the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a depth bound. An attacker who can supply YAML for parsing can trigger a `RangeError: Maximum call stack size exceeded` with a small payload (~2–10 KB). The `RangeError` is not a `YAMLParseError`, so applications that only catch YAML-specific errors will encounter an unexpected exception type. Depending on the host application's exception handling, this can fail requests or terminate the Node.js process. Flow sequences allow deep nesting with minimal bytes (2 bytes per level: one `[` and one `]`). On the default Node.js stack, approximately 1,000–5,000 levels of nesting (2–10 KB input) exhaust the call stack. The exact threshold is environment-dependent (Node.js version, stack size, call stack depth at invocation). Note: the library's `Parser` (CST phase) uses a stack-based iterative approach and is not affected. Only the compose/resolve phase uses actual call-stack recursion. All three public parsing APIs are affected: `YAML.parse()`, `YAML.parseDocument()`, and `YAML.parseAllDocuments()`. Versions 1.10.3 and 2.8.3 contain a patch.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - `yaml` is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of `yaml` on
    the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack
    overflow. The node resolution/composition phase uses recursive function calls without a depth bound. An
    attacker who can supply YAML for parsing can trigger a `RangeError: Maximum call stack size exceeded` with
    a small payload (~2–10 KB). The `RangeError` is not a `YAMLParseError`, so applications that only catch
    YAML-specific errors will encounter an unexpected exception type. Depending on the host application's
    exception handling, this can fail requests or terminate the Node.js process. Flow sequences allow deep
    nesting with minimal bytes (2 bytes per level: one `[` and one `]`). On the default Node.js stack,
    approximately 1,000–5,000 levels of nesting (2–10 KB input) exhaust the call stack. The exact threshold is
    environment-dependent (Node.js version, stack size, call stack depth at invocation). Note: the library's
    `Parser` (CST phase) uses a stack-based iterative approach and is not affected. Only the compose/resolve
    phase uses actual call-stack recursion. All three public parsing APIs are affected: `YAML.parse()`,
    `YAML.parseDocument()`, and `YAML.parseAllDocuments()`. Versions 1.10.3 and 2.8.3 contain a patch.
    (CVE-2026-33532)

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2824-1 advisory.

    This update for alloy fixes the following issues

    - CVE-2026-10722: github.com/cilium/ebpf: BTF string offset boundary check can lead to crash when parsing     malformed ELF/BTF input (bsc#1267811).
    - CVE-2026-25680,CVE-2026-25681,CVE-2026-27136,CVE-2026-42502,CVE-2026-42506: golang.org/x/net/html:
    multiple issues when parsing HTML files (bsc#1267185).
    - CVE-2026-33532: Denial of Service via deeply nested YAML document parsing (bsc#1260981).
    - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for     validation bypass and privilege escalation (bsc#1266654).
    - CVE-2026-39827,CVE-2026-39828,CVE-2026-39829,CVE-2026-39830,CVE-2026-39831,CVE-2026-39832,CVE-2026-     39833,CVE-2026-39834,CVE-2026-39835,CVE-2026-42508,CVE-2026-46595,CVE-2026-46597,CVE-2026-46598:
    golang.org/x/crypto/ssh: multiple issues (bsc#1266196).
    - CVE-2026-41889: github.com/jackc/pgx/v5/internal/sanitize: SQL injection when placeholders in dollar-     quoted string literals are used in the SQL query (bsc#1265440).
    - CVE-2026-44740: github.com/go-git/go-billy/v5: improper input handling in many components can lead to     DoS via infinite loops, panics or resource consumption (bsc#1267333).
    - CVE-2026-45678: go.opentelemetry.io/obi: Postgres BIND parsing can lead to a panic when malformed     payloads are processed (bsc#1267481).
    - CVE-2026-45682: go.opentelemetry.io/obi: keys not deleted by `CappedConcurrentHashMap` after removals     allows repeated connection churn to grow the queue without bound and exhaust heap memory (bsc#1267485).
    - CVE-2026-45685: go.opentelemetry.io/obi: MongoDB TCP parser panics on malformed wire messages and causes     a DoS (bsc#1267488).
    - CVE-2026-45686: go.opentelemetry.io/obi: integer overflow in memcached text protocol parser can crash     the OBI process and cause denial of service (bsc#1267489).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21251-1 advisory.

    Update to version 1.17.0.

    Security issues fixed:

    - CVE-2026-25680: golang.org/x/net/html: parsing arbitrary HTML can consume excessive CPU time, possibly     leading to       denial of service (bsc#1267185).
    - CVE-2026-25681: golang.org/x/net/html: parsing arbitrary HTML which is then rendered using Render can     result in an       unexpected HTML tree and allows for XSS (bsc#1267185).
    - CVE-2026-27136: golang.org/x/net/html: parsing arbitrary HTML which is then rendered using Render can     result in an       unexpected HTML tree and allows for XSS (bsc#1267185).
    - CVE-2026-33532: yaml: parsing input with deeply nestes collections may throw a `RangeError` due to a     stack overflow       and cause to a denial of service (bsc#1260981).
    - CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only Punycode-encoded labels allows for     validation       bypass and privilege escalation (bsc#1266654).
    - CVE-2026-39827: golang.org/x/crypto/ssh: authenticated SSH clients that repeatedly open channels which     were rejected       by the server can cause unbounded memory growth and a crash (bsc#1266196).
    - CVE-2026-39828: golang.org/x/crypto/ssh: permissions discarded when an SSH server authentication     callback returns       `PartialSuccessError` with non-`nil` permissions (bsc#1266196).
    - CVE-2026-39829: golang.org/x/crypto/ssh: unenforced size limits on key parameters by the the RSA and DSA     public key       parsers can lead to excessive CPU consumption when processing a crafted public key (bsc#1266196).
    - CVE-2026-39830: golang.org/x/crypto/ssh: malicious SSH peers sending unsolicited global request     responses can block a       connection's read loop and cause a resource leak (bsc#1266196).
    - CVE-2026-39831: golang.org/x/crypto/ssh: missing `User Presence` flag checks in the `Verify()` method     for FIDO/U2F       security key types cause signatures generated without physical touch to be accepted (bsc#1266196).
    - CVE-2026-39832: golang.org/x/crypto/ssh: destination restrictions are silently stripped when forwarding     keys and       allow for unrestricted use of a key on a remote host (bsc#1266196).
    - CVE-2026-39833: golang.org/x/crypto/ssh: in-memory keyring returned by `NewKeyring()` silently accepts     keys with the       `ConfirmBeforeUse` constraint but never enforces it (bsc#1266196).
    - CVE-2026-39834: golang.org/x/crypto/ssh: writing data larger than 4GB in a single `Write` call on an SSH     channel       leads to an integer overflow and an infinite loop that sends empty packets (bsc#1266196).
    - CVE-2026-39835: golang.org/x/crypto/ssh: processing of certificates by SSH servers using `CertChecker`     as a public       key callback without setting `IsUserAuthority` or `IsHostAuthority` can lead to a panic (bsc#1266196).
    - CVE-2026-41889: github.com/jackc/pgx/v5/internal/sanitize: use placeholders in dollar-quoted string     literals in an       SQL query can lead to a SQL injection (bsc#1265440).
    - CVE-2026-42502: golang.org/x/net/html: parsing arbitrary HTML which is then rendered using Render can     result in an       unexpected HTML tree and allows for XSS (bsc#1267185).
    - CVE-2026-42506: golang.org/x/net/html: parsing arbitrary HTML which is then rendered using Render can     result in an       unexpected HTML tree and allows for XSS (bsc#1267185).
    - CVE-2026-42508: golang.org/x/crypto/ssh: revoked `SignatureKey`s belonging to a CA are not correctly     checked for       revocation (bsc#1266196).
    - CVE-2026-44740: github.com/go-git/go-billy/v5: improper input handling in many components can lead to     DoS via       infinite loops, panics or resource consumption (bsc#1267333).
    - CVE-2026-45678: go.opentelemetry.io/obi: Postgres BIND parsing can lead to a panic when malformed     payloads are       processed (bsc#1267481).
    - CVE-2026-45682: go.opentelemetry.io/obi: keys not deleted by `CappedConcurrentHashMap` after removals     allows repeated       connection churn to grow the queue without bound and exhaust heap memory (bsc#1267485).
    - CVE-2026-45685: go.opentelemetry.io/obi: MongoDB TCP parser panics on malformed wire messages and causes     a DoS       (bsc#1267488).
    - CVE-2026-45686: go.opentelemetry.io/obi: integer overflow in memcached text protocol parser can crash     the OBI process       and cause denial of service (bsc#1267489).
    - CVE-2026-46595: golang.org/x/crypto/ssh: source-address validation is skipped if any other type of     callback is passed       other than public key (bsc#1266196).
    - CVE-2026-46597: golang.org/x/crypto/ssh: incorrectly placed cast from bytes to int in the AES-GCM packet     decoder when       processing specially crafted input can lead to for server-side panic (bsc#1266196).
    - CVE-2026-46598: golang.org/x/crypto/ssh: `ed25519.PrivateKey` created by casting malformed wire bytes     due to       processing of certain crafted inputs can lead to panic when used (bsc#1266196).

    Other updates and bugfixes:

    - Version 1.17.0:
      * Features
        * Add GraphQL server and `gql` subcommand.
        * `otelcol`: Add Nginx receiver.
        * `otelcol.exporter.prometheus`: Convert classic histograms to NHCB.
        * `database_observability`: Various enhancements for MySQL and Postgres.
        * `faro.receiver`: Support gzip-compressed request bodies.
        * Update to Beyla 3.9.8.
     * Bug Fixes
       * security: Update `x/crypto`, `x/net`, `jackc/pgx/v5`, and `obi`.
       * cluster: Fix nodes failing to join the cluster with TLS enabled.
       * `loki.process`: Fix potential deadlocks and limit stage shutdown.
       * Update Go to v1.26.4.
    - Version 1.16.3:
      * cluster: Fix nodes failing to join the cluster when TLS is enabled.
    - Version 1.16.2:
      * `loki.process`: No longer mutate rules in `stage.truncate` causing every config update to reload     pipeline when this         stage is used.
      * `loki.process`: Potential deadlock on update with stage and receiver changes.
      * `otelcol.exporter.awss3`: Add missing `unique_key_func_name` attribute.
    - Remove dependency on vulnerable `yaml` library.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - `yaml` is a YAML parser and serialiser for JavaScript. Parsing a YAML document with a version of `yaml` on     the 1.x branch prior to 1.10.3 or on the 2.x branch prior to 2.8.3 may throw a RangeError due to a stack     overflow. The node resolution/composition phase uses recursive function calls without a depth bound. An     attacker who can supply YAML for parsing can trigger a `RangeError: Maximum call stack size exceeded` with     a small payload (~210 KB). The `RangeError` is not a `YAMLParseError`, so applications that only catch     YAML-specific errors will encounter an unexpected exception type. Depending on the host application's     exception handling, this can fail requests or terminate the Node.js process. Flow sequences allow deep     nesting with minimal bytes (2 bytes per level: one `[` and one `]`). On the default Node.js stack,     approximately 1,0005,000 levels of nesting (210 KB input) exhaust the call stack. The exact threshold is     environment-dependent (Node.js version, stack size, call stack depth at invocation). Note: the library's     `Parser` (CST phase) uses a stack-based iterative approach and is not affected. Only the compose/resolve     phase uses actual call-stack recursion. All three public parsing APIs are affected: `YAML.parse()`,     `YAML.parseDocument()`, and `YAML.parseAllDocuments()`. Versions 1.10.3 and 2.8.3 contain a patch.
    (CVE-2026-33532)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
459356	Echo: yaml: security update to 1.10.3	Tenable Cloud Security	Echo Local Security Checks	Local	medium
459356	Echo: yaml: security update to 1.10.3	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
326329	SUSE SLED15 / SLES15 Security Update : alloy (SUSE-SU-2026:2824-1)	Nessus	SuSE Local Security Checks	Local	medium
326022	openSUSE 16 Security Update : alloy (openSUSE-SU-2026:21251-1)	Nessus	SuSE Local Security Checks	Local	low
303989	Linux Distros Unpatched Vulnerability : CVE-2026-33532	Nessus	Misc.	Local	medium
439222	SCA: security update for yaml (GHSA-48c2-rrv3-qjmp)	Tenable Cloud Security	SCA Checks	Local	medium
439222	SCA: security update for yaml (GHSA-48c2-rrv3-qjmp)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-33532

medium

Tenable Plugins

medium

medium

medium

low

medium

medium

medium