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CVE-2026-58181 Apache CVE debrief

Apache Traffic Server's uri_signing and url_sig plugins can crash or exhaust the stack with attacker input, affecting versions 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. This issue presents a high severity vulnerability, with a CVSS score of 8.2, and users are strongly advised to upgrade to version 9.2.15 or 10.1.4. The vulnerability allows for potential crashes or stack exhaustion, impacting the stability and security of affected systems.

Vendor
Apache
Product
Traffic Server
CVSS
HIGH 8.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-29
Original CVE updated
2026-07-31
Advisory published
2026-07-29
Advisory updated
2026-07-31

Who should care

Users of Apache Traffic Server versions 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3 should be aware of this vulnerability and take action to upgrade to a patched version. This includes operators, security teams, and vulnerability management teams responsible for these systems.

Technical summary

The Apache Traffic Server uri_signing and url_sig plugins are susceptible to stack exhaustion or crashes due to improper handling of attacker input. This vulnerability affects Apache Traffic Server versions 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. The issue is addressed in versions 9.2.15 and 10.1.4, which users are recommended to upgrade to. The vulnerability has a CVSS score of 8.2, indicating high severity. Successful exploitation could lead to system crashes or instability, emphasizing the need for prompt mitigation.

Defensive priority

Upgrade to patched versions to prevent potential crashes or stack exhaustion.

Recommended defensive actions

  • Upgrade to version 9.2.15 or 10.1.4
  • Review and apply vendor advisory
  • Monitor for potential crashes or stack exhaustion
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD detail provide information on the vulnerability and affected versions. A vendor advisory is available on the Apache mailing list. The issue affects Apache Traffic Server versions 8.0.0 through 8.1.9, 9.0.0 through 9.2.14, and 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4. The advisory and CVE record should be reviewed for further details.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-58181 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-58181

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-58181 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-58181

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.