CVE-2026-125105 (CVSS 3.7)

Description

Wagtail is an open source content management system built on Django. Prior to 7.0.9, 7.3.4, 7.4.3, and 8.0rc2, Wagtail applies ETag conditional request processing to the document serve endpoint before document permission and filename checks complete. An unauthenticated attacker who knows a document ID and a candidate SHA1 hash can submit If-Match or If-None-Match and distinguish the response, revealing whether that hash is present in the document library. The issue does not expose document contents, filenames, other metadata, or information about hashes the attacker does not already know. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.

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CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0028

Probability of exploitation

0.21%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-280 CWE-280

References

Other References

https://github.com/wagtail/wagtail/commit/2db8a92ab888467bdd008b8e098c3d94d7da25f3 https://github.com/wagtail/wagtail/commit/a1402376889be87cfc413cf9f2694a547d2b77c7 https://github.com/wagtail/wagtail/commit/c4c38746855a562f451838fbfe0c77dab2c61829 https://github.com/wagtail/wagtail/commit/f05649908fb727035108194792fb5e4f9bb6c1b8 https://github.com/wagtail/wagtail/releases/tag/v7.0.9 https://github.com/wagtail/wagtail/releases/tag/v7.3.4 https://github.com/wagtail/wagtail/releases/tag/v7.4.3 https://github.com/wagtail/wagtail/releases/tag/v8.0rc2 https://github.com/wagtail/wagtail/security/advisories/GHSA-92hv-j533-69wc

Frequently Asked Questions

What is CVE-2026-125105? +

Wagtail is an open source content management system built on Django. Prior to 7.0.9, 7.3.4, 7.4.3, and 8.0rc2, Wagtail applies ETag conditional request processing to the document serve endpoint before document permission and filename checks complete. An unauthenticated attacker who knows a document ID and a candidate SHA1 hash can submit If-Match or If-None-Match and distinguish the response, revealing whether that hash is present in the document library. The issue does not expose document contents, filenames, other metadata, or information about hashes the attacker does not already know. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2026-125105? +

CVE-2026-125105 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact. The EPSS score is 0.0028, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-125105? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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