Vulnerability · Published May 11, 2026 · Assigned by wikimedia-foundation
CVE-2026-34089Memory leak in Scribunto causes runJobs.php to run out of memory
Low 2.3
In plain English
A low-severity cross-site scripting in Scribunto from Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 4.0)2.3Low
Exploit odds (30 days)0.3%top 71.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Vulnerability in Wikimedia Foundation Scribunto. This issue affects Scribunto: from 1.45.0 before 1.45.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:25.10 | mediawiki | no fix listed | UBUNTU-CVE-2026-34089 |
| Ubuntu:26.04:LTS | mediawiki | no fix listed | UBUNTU-CVE-2026-34089 |
| Ubuntu:26.10 | mediawiki | no fix listed | UBUNTU-CVE-2026-34089 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wikimedia Foundation | Scribunto | 1.45.0 – before 1.45.2 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N