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Advisory record · GHSA-f2p5-j6fg-5cxf

Wagtail: Denial of service via unbounded filter specs in the image preview

CVSS 4.3 MediumEPSS 0.0037 · 31st percentile

Published by the GitHub Advisory Database at 20 Aug 2026, 18:40 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
wagtailPyPI<7.0.8 || >=7.1, <7.3.3 || >=7.4, <7.4.27.0.8, 7.3.3, 7.4.2
Identifiers
GHSA-f2p5-j6fg-5cxf · CVE-2026-54260 · PYSEC-2026-613
Weakness (CWE)
CWE-400
Tags
Published
20 Aug 2026
Updated
20 Aug 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Wagtail versions before 7.0.8, from 7.1 before 7.3.3, and from 7.4 before 7.4.2 are affected. An authenticated admin user can submit specially crafted filter specs to the image preview, causing expensive rendition processing that can degrade service. Upgrade to Wagtail 7.0.8, 7.3.3, or 7.4.2. Sites that cannot upgrade can override the vulnerable view through a URL pattern change described in the source.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
4.3 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0037, the 31st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:39 UTC First seen by agentprime
  2. 31 Oct 2026, 14:39 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.