How severe is CVE-2026-97736?

CVE-2026-97736 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-97736 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-97736?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-97736 published?

CVE-2026-97736 was published on 2026-09-25 and last updated on 2026-09-30.

CVE-2026-97736

CVE-2026-97736 is a medium-severity vulnerability with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-777.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-777
Published: 2026-09-25
Last modified: 2026-09-30

Description

tinyauth before 5.1.3 allows rule bypass by appending an allowed route string. This is caused by an unanchored regular expression.

Frequently asked questions

What is CVE-2026-97736?: tinyauth before 5.1.3 allows rule bypass by appending an allowed route string. This is caused by an unanchored regular expression.
How severe is CVE-2026-97736?: CVE-2026-97736 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-97736 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-97736?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-97736 published?: CVE-2026-97736 was published on 2026-09-25 and last updated on 2026-09-30.

References

https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-r27r-rr9v-vv37

Other CWE-777 vulnerabilities

CVE-2026-22068 — High (CVSS 8.2): Regular Expression without Anchors vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server:…
CVE-2026-40110 — High (CVSS 7.3): Jupyter Server is the backend for Jupyter web applications. In versions 2.17.0 and earlier, the Origin header…
CVE-2026-39087 — Medium (CVSS 6.4): ntfy before 2.22.0 allows SSRF because of an unanchored regular expression for web push endpoint URLs.

Browse all CWE-777 vulnerabilities →