Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and forwards unvalidated guest-supplied metric IDs to the internal stats API. This issue affects Apache Traffic Server: from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 10.1.5 or 10.2.1, which fix the issue.

The remote Fedora 45 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-84f58bb437 advisory.

    Changes with Apache Traffic Server 10.2.1

     - \#13553 - origin_server_auth: Improve log messages
     - \#13567 - Metrics: Revert added locking and annotations
     - \#13505 - Add hidden metrics and MAX/MIN/incremental derived metric aggregation
     - \#13538 - Fix records_yaml startup lookup race
     - \#13510 - doc: rate_limit uses max_age, not max-age
     - \#13238 - prefetch: move cache key acquisition to CACHE_LOOKUP_COMPLETE
     - \#13580 - compress: add Vary to cached client responses
     - \#13506 - Per upstream server connection metrics via hidden and derived metrics
     - \#13577 - Fix silently dropped Streams.all autest assertions
     - \#13110 - Add `_reload` directive support for config reload framework.
     - \#13589 - Skip rate_limit AuTests when plugin not built
     - \#13593 - Fix Clang 21 analyzer findings
     - \#13576 - Fix client certificate context updates
     - \#13578 - Remove dead JSONRPC server_shutdown handler
     - \#13227 - Fix data race in SSLCertContext copy & assignment
     - \#13642 - Proxy Verifier v3.2.0
     - \#13558 - dns: fix remaining-space tracking when copying address records
     - \#13570 - Argparser variable arg option parsing fix/improvement.
     - \#13583 - Metrics: close the id lookup race and bounds gaps left by the lock revert
     - \#13652 - Restore regex_remap's default PCRE2 match limit
     - \#13646 - header_rewrite: build the matcher for %{LAST-CAPTURE} conditions
     - \#13514 - Share HTTP accept properties
     - \#13645 - Cleanup LogField Registration
     - \#13063 - Add changelog generation tool for GitHub milestones
     - \#13574 - Fix TransformVConnection leak in abort_tunnel()
     - \#13450 - h2origin autest: honor the 30s squid.log wait budget
     - \#13672 - header_rewrite: guard the i == 0 case in HRWSimpleTokenizer
     - \#13673 - Fix build errors with LLVM 23
     - \#13616 - Allow a metric to be unlisted
     - \#13697 - Fix strncasecmp checks that accepted a prefix as equal
     - \#13355 - Add --version CLI flag to hrw4u
     - \#13666 - Retract per server metrics when the mode changes
     - \#13700 - Fix the 9.2 compatibility cache key for paths that carry ;params
     - \#13696 - hrw4u: admit SESSION_VARS as a denyable section
     - \#13611 - Make the 9.2 compatibility cache key usable end to end
     - \#13571 - Use __atomic builtins as the freelist 128-bit CAS fallback
     - \#13655 - QPACK: use || in the varint decode range guards
     - \#13656 - hrw4u: exit non-zero on compile errors
     - \#13699 - hrw4u: add an AST round-trip test over the whole corpus
     - \#13675 - hrw4u: enforce sandbox NOT and in on their implicit spellings
     - \#13653 - Handle all cachekey regex capture groups
     - \#13715 - Test 103 Early Hints before a cached range response
     - \#13718 - cache: retry without O_DIRECT for an explicit file span
     - \#13560 - Honor allow_half_open when a client aborts early
     - \#13455 - Reuse deleted MIME field slots
     - \#13677 - Fix global TLS ticket key use for certificate contexts
     - \#13717 - tests: cover the global TLSv1.3 session ticket count
     - \#13740 - Coverity: avoid unsigned wrap in AIO cache_op loop
     - \#13728 - Fix SSL 2.0 version code in JA4 fingerprints
     - \#13736 - Bind session ticket keys to the dest_ip certificate
     - \#13719 - Hex-encode non-alphanumeric ALPN bytes in JA4 fingerprints
     - \#13725 - Include signature algorithms in JA4 fingerprints
     - \#13762 - Python 3.15: accommodate PyYAML without CLoader
     - \#13761 - Handle OpenSSL 4 handshake buffer exhaustion
     - \#13760 - Support OpenSSL 4 certificate accessors in WASM
     - \#13695 - Fix HTTP flow control policy reload
     - \#13759 - Remove unused globals rejected by Clang 23
     - \#13766 - Harden shutdown against repeated exit signals
     - \#13782 - Fix parsing of bodyless HTTP/2 origin responses over 4 KB
     - \#13351 - Handle HTTP/2 1xx interim responses from the origin
     - \#13447 - HTTP/2 to origin session pool and reliability fixes
     - \#13776 - compress: use weak ETags for compressed responses
     - \#13783 - Drain an HTTP/2 origin session after it sends GOAWAY
     - \#13723 - tests: drive tls_sni_groups with openssl s_client
     - \#13780 - Deliver H2 END_STREAM that arrives while read is throttled
     - \#13729 - Honor TLS handshake hook pauses on BoringSSL
     - \#13763 - Frame empty TLS origin responses in AuTests
     - \#13674 - hrw4u: enforce sandbox policy on value functions
     - \#13767 - cache: keep the stripe locked after the shutdown dir sync
     - \#13559 - Build the well-known-string table at compile time
     - \#13376 - Reduce repeated work in HTTP header parsing
     - \#13739 - hrw4u: report each sandbox warning at the use that triggers it
     - Fix use-after-free in wasm plugin TXN_CLOSE epilogue
     - Compare h2 Content-Length and payload at full width
     - wasm: Validate metric ID before making API call
     - http: reject HEAD requests carrying Content-Length/Transfer-Encoding
     - Throttle @ header strip logs
     - tsmemcache: bind to loopback by default and add configurable bind address
     - Regex: optionally require whole-subject matches for policy rules
     - Strip unauthorized x-amz- request headers in origin_server_auth
     - CVE-2025-55702 - Fix request with POST Expect: 100-continue
     - Require a matching client certificate for outbound session reuse
     - magick: require signing key and allowlist convert operators
     - origin_server_auth: clarify x-amz- stripping scope in docs and comments
     - proxy: reject resumed TLS sessions missing a required client cert
     - Fix mTLS for TLS resumption scenarios
     - Drop the special case for badly formed 302 responses
     - doc: correct the regex matching contract where sites enforce full match
     - Size chunked passthrough writes without dropped trailers
     - chunked_encoding: add regression test for chunked responses with trailers
     - Reuse an origin connection only after its request body is written
     - doc: record the security release in the release notes
     - Count the Pad Length field in the h2 DATA padding check
     - Fix a SIGSEGV in UnixNetVConnection::net_write_io on dechunked POST responses



Tenable has extracted the preceding description block directly from the Fedora 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 version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 3caa3b4b-d2ab-11f1-bae2-3497f65b111b advisory.

    The Apache Traffic Server project published security advisories               for issues fixed in releases 10.1.1 through 10.1.5.  They include               request smuggling and cache poisoning through malformed requests and               responses, memory corruption, and unauthenticated access in the               experimental plugins, which the port builds (tsmemcache, wasm, and               magick with the IMAGEMAGICK option).

Tenable has extracted the preceding description block directly from the FreeBSD 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.

  - Apache Traffic Server's experimental wasm plugin has a use-after-free in its transaction-close handler and     forwards unvalidated guest-supplied metric IDs to the internal stats API. This issue affects Apache     Traffic Server: from 10.0.0 through 10.1.4, 10.2.0. Users are recommended to upgrade to version 10.1.5 or     10.2.1, which fix the issue. (CVE-2026-111804)

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

ID	Name	Product	Family	Type	Severity
374614	Fedora 45 : trafficserver (2026-84f58bb437)	Nessus	Fedora Local Security Checks	Local	high
373479	FreeBSD : trafficserver -- multiple vulnerabilities (3caa3b4b-d2ab-11f1-bae2-3497f65b111b)	Nessus	FreeBSD Local Security Checks	Local	critical
370267	Linux Distros Unpatched Vulnerability : CVE-2026-111804	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-111804

high

Tenable Plugins

high

critical

high