React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage() is being used from @react-router/node (or @remix-run/node/@remix-run/deno in Remix v2) with an unsigned cookie, it is possible for an attacker to cause the session to try to read/write from a location outside the specified session file directory. The success of the attack would depend on the permissions of the web server process to access those files. Read files cannot be returned directly to the attacker. Session file reads would only succeed if the file matched the expected session file format. If the file matched the session file format, the data would be populated into the server side session but not directly returned to the attacker unless the application logic returned specific session information. This issue has been patched in @react-router/node version 7.9.4, @remix-run/deno version 2.17.2, and @remix-run/node version 2.17.2.

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4606-1 advisory.

    golang-github-prometheus-prometheus was updated to version 3.13.2:

    - Security issues:

      * CVE-2026-39821: Fixed validation bypass and privilege escalation in Punycode label handling     (bsc#1266608)
      * CVE-2026-56852: Fixed infinite loop on truncated or invalid UTF-8 input in unicode/norm handling     (bsc#1272102)
      * CVE-2026-44990: Fixed stored XSS in the new React UI by sanitizing disallowed xmp elements     (bsc#1275205)
      * CVE-2026-53606: Fixed incomplete URI scheme validation in sanitize-html that could enable XSS     (bsc#1269966)
      * CVE-2026-2303: Fixed heap out-of-bounds read in GSSAPI error handling in mongo-driver (bsc#1269856)
      * CVE-2025-4673: Fixed credential leaks by stopping HTTP client header forwarding on redirects     (bsc#1275206)
      * CVE-2023-45289: Fixed credential leaks by stopping header and cookie forwarding on HTTP redirects     (bsc#1275207)
      * CVE-2025-61686: Fixed unauthorized file access and path traversal in react-router storage     (bsc#1270711)
      * CVE-2026-40181: Fixed open redirect risks to external domains via relative paths in react-router     (bsc#1267528)
      * CVE-2026-42342: Fixed DoS risks via unbounded path expansion in the manifest endpoint (bsc#1267538)
      * CVE-2026-42211: Fixed remote code execution risks from prototype pollution in react-router     (bsc#1267534)
      * CVE-2026-39882: Fixed memory exhaustion via uncapped HTTP response reading in OpenTelemetry     (bsc#1274221)
      * Fixed potential denial-of-service vulnerabilities by updating the gRPC dependency
      * Fixed memory exhaustion and DoS by rejecting snappy-compressed requests exceeding 32MB limit

    - Bug fixes and changes:

      * Fixed scrape manager failing to reload properly when SD configuration changes rapidly.
      * Prevent memory leak in remote-write path when the receiving endpoint is unavailable.
      * Native Histograms are no longer experimental. They are fully supported for production workloads.
      * Added support for OpenTelemetry traces within the Prometheus UI to correlate metrics and traces.
      * TSDB compaction speed optimized by improving the block merging algorithm.
      * Allow scraping of multiple targets using a single HTTP/2 connection to reduce overhead.
      * Added new metrics to monitor the health of the rule evaluation engine.
      * Incompatible: This affects scraping, remote read and write, alerting, and SD. Network paths might need     adjustments         to avoid redirects.
      * Incompatible: Rule group pagination tokens now use SHA-256 instead of MD5. Custom API consumers must     adapt to the         new longer token format.
      * Added 'group_limit' parameter to PromQL aggregations to restrict the number of results.
      * Incompatible: promtool relative paths in config files now resolve relative to the config directory     itself, instead         of the current working directory.
      * Support exporting TSDB blocks directly to cloud storage via the admin API.
      * Incompatible: Deprecated remote-write metrics like prometheus_remote_storage_samples_total are removed     in favor of         prometheus_wal_watcher_records_read_total.
      * Significant query performance boost for high-cardinality regex matchers.
      * Introduce a new UI interface for safely deleting specific time series data directly.
      * Added dynamic relabeling actions to extract substrings using regex capture groups.
      * Fixed UI displaying incorrect time ranges after a timezone change.
      * Bumped firewalld-prometheus-config to version 0.2 bumping OpenTelemetry to 1.43.0

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.

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

  - React Router is a router for React. In @react-router/node versions 7.0.0 through 7.9.3, @remix-run/deno
    prior to version 2.17.2, and @remix-run/node prior to version 2.17.2, if createFileSessionStorage() is
    being used from @react-router/node (or @remix-run/node/@remix-run/deno in Remix v2) with an unsigned
    cookie, it is possible for an attacker to cause the session to try to read/write from a location outside
    the specified session file directory. The success of the attack would depend on the permissions of the web
    server process to access those files. Read files cannot be returned directly to the attacker. Session file
    reads would only succeed if the file matched the expected session file format. If the file matched the
    session file format, the data would be populated into the server side session but not directly returned to
    the attacker unless the application logic returned specific session information. This issue has been
    patched in @react-router/node version 7.9.4, @remix-run/deno version 2.17.2, and @remix-run/node version
    2.17.2. (CVE-2025-61686)

ID	Name	Product	Family	Type	Severity
369278	SUSE SLES15 Security Update : golang-github-prometheus-prometheus (SUSE-SU-2026:4606-1)	Nessus	SuSE Local Security Checks	Local	high
436689	SCA: security update for @react-router/node, @remix-run/deno, @remix-run/node (GHSA-9583-h5hc-x8cw)	Tenable Cloud Security	SCA Checks	Local	critical
436689	SCA: security update for @react-router/node, @remix-run/deno, @remix-run/node (GHSA-9583-h5hc-x8cw)	Tenable Self-Hosted Container Security	SCA Checks	Local	critical

Detections

Analytics

CVE-2025-61686

critical

Tenable Plugins

high

critical

critical