CVE-2026-34089
Memory leak in Scribunto causes runJobs.php to run out of memory
Description
Vulnerability in Wikimedia Foundation Scribunto. This issue affects Scribunto: from 1.45.0 before 1.45.2.
INFO
Published Date :
May 11, 2026, 4:17 p.m.
Last Modified :
Aug. 11, 2026, 1:26 p.m.
Remotely Exploit :
Yes !
Source :
c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | LOW | c4f26cc8-17ff-4c99-b5e2-38fc1793eacc |
Solution
- Update Scribunto to version 1.45.2 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34089.
| URL | Resource |
|---|---|
| https://phabricator.wikimedia.org/T419168 | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34089 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34089
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34089 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34089 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Aug. 11, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-401 Added CPE Configuration OR *cpe:2.3:a:wikimedia:scribunto:*:*:*:*:*:mediawiki:*:* versions from (including) 1.45.0 up to (excluding) 1.45.2 Added Reference Type wikimedia-foundation: https://phabricator.wikimedia.org/T419168 Types: Exploit, Vendor Advisory -
CVE Modified by c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://gerrit.wikimedia.org/g/mediawiki/extensions/Scribunto/+/refs/heads/master', 'vendor': 'Wikimedia Foundation', 'product': 'Scribunto', 'versions': [{'status': 'affected', 'version': '1.45.0', 'lessThan': '1.45.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-34089', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-05-11T15:53:02.323727Z'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 11, 2026
Action Type Old Value New Value Added CWE CWE-79 -
New CVE Received by c4f26cc8-17ff-4c99-b5e2-38fc1793eacc
May. 11, 2026
Action Type Old Value New Value Added Description Vulnerability in Wikimedia Foundation Scribunto. This issue affects Scribunto: from 1.45.0 before 1.45.2. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/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 Added Reference https://phabricator.wikimedia.org/T419168