GHSA-892m-gcq8-2468

Suggest an improvement
Source
https://github.com/advisories/GHSA-892m-gcq8-2468
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-892m-gcq8-2468/GHSA-892m-gcq8-2468.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-892m-gcq8-2468
Withdrawn
2026-08-25T16:40:27Z
Published
2026-08-23T15:33:06Z
Modified
2026-08-26T01:18:21Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
Duplicate Advisory: Uncontrolled recursion DoS in JustHTML() via deeply nested HTML
Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-v7cf-c9rm-wm3j. This link is maintained to preserve external references.

Original Description

justhtml through 1.9.1 (fixed in 1.10.0) is vulnerable to uncontrolled recursion leading to denial of service. During JustHTML() construction, TreeBuilder.finish() unconditionally calls _populate_selectedcontent(), which recursively traverses the DOM tree via _find_elements()/_find_element() without a depth bound. An attacker who can supply HTML for parsing can provide deeply nested elements (e.g., ~1000 nested

tags, roughly 11 KB) to exceed CPython's default recursion limit and trigger an unhandled RecursionError, which may abort parsing, fail requests, or terminate a worker/process depending on the host application's exception handling.

Database specific 
{
    "cwe_ids": [
        "CWE-674"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-25T16:40:27Z",
    "nvd_published_at": "2026-08-23T14:16:55Z",
    "severity": "HIGH"
}
References

Affected packages

PyPI / justhtml

Package

Name
justhtml
View open source insights on deps.dev
Purl
pkg:pypi/justhtml

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
1.9.1

Affected versions

0.*
0.1.0
0.2.0
0.3.0
0.4.0
0.5.0
0.5.1
0.5.2
0.6.0
0.7.0
0.8.0
0.9.0
0.10.0
0.11.0
0.12.0
0.13.0
0.13.1
0.14.0
0.15.0
0.16.0
0.17.0
0.18.0
0.19.0
0.20.0
0.21.0
0.22.0
0.23.0
0.24.0
0.25.0
0.26.0
0.27.0
0.28.0
0.29.0
0.30.0
0.31.0
0.32.0
0.33.0
0.34.0
0.35.0
0.36.0
0.37.0
0.38.0
0.39.0
0.40.0
1.*
1.0.0
1.1.0
1.2.0
1.3.0
1.4.0
1.5.0
1.6.0
1.7.0
1.8.0
1.9.0
1.9.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-892m-gcq8-2468/GHSA-892m-gcq8-2468.json"