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CVE-2026-97736 tinyauth CVE debrief

CVE-2026-97736 is a medium-severity vulnerability in tinyauth before version 5.1.3. The issue allows for rule bypass by appending an allowed route string due to an unanchored regular expression. This CVE was published on 2026-09-25T04:17:50.977Z and was last modified on 2026-09-26T23:16:43.433Z. Defenders and security teams responsible for tinyauth installations should assess exposure to this vulnerability and prioritize verification and potential updates. The vulnerability could potentially allow an attacker to bypass security rules.

Vendor
tinyauth
Product
Unknown
CVSS
MEDIUM 5.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-25
Original CVE updated
2026-09-26
Advisory published
2026-09-25
Advisory updated
2026-09-26

Who should care

Defenders and security teams responsible for tinyauth installations should assess exposure to this vulnerability and prioritize verification and potential updates.

Why it matters

CVE-2026-97736 is a medium-severity vulnerability in tinyauth before version 5.1.3 that allows for rule bypass. Defenders should prioritize verifying the version in use and assessing exposure.

  • Defenders need to verify the version of tinyauth in use and assess exposure to this vulnerability.
  • Security teams should review and update the regular expression used in tinyauth to ensure it is properly anchored.
  • Upgrading to tinyauth version 5.1.3 or later may be necessary to address this vulnerability.

Technical summary

The vulnerability in tinyauth before version 5.1.3 allows for rule bypass by appending an allowed route string due to an unanchored regular expression. This could potentially allow an attacker to bypass security rules. The vulnerability has a CVSS score of 5.4 and is classified as medium-severity. Defenders should prioritize verifying the version of tinyauth in use and assessing exposure to this vulnerability.

Defensive priority

Defenders should prioritize verifying the version of tinyauth in use and assessing exposure to this vulnerability.

Recommended defensive actions

  • Verify the version of tinyauth in use and assess exposure to this vulnerability.
  • Review and update the regular expression used in tinyauth to ensure it is properly anchored.
  • Consider upgrading to tinyauth version 5.1.3 or later if available.

Evidence notes

The CVE record and NVD entry provide details about the vulnerability, including its description and CVSS score. The vulnerability is caused by an unanchored regular expression in tinyauth before version 5.1.3. The CVE record was published on 2026-09-25T04:17:50.977Z and has not been modified since then. The NVD entry provides additional information about the vulnerability, including its CVSS score and severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-97736 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-97736

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

  • CVE-2026-97736 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-97736

    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.