7.3

CVE-2023-3550: debian debian_linux Cross-site Scripting

CVSS: 7.3v3.1HighModified
AliasesUBUNTU-CVE-2023-3550DEBIAN-CVE-2023-3550
Published 25-09-2023Last modified 13-02-2025
Open JSON

Vulnerability summary

CVE-2023-3550 is a high (CVSS 7.3) Cross-site Scripting vulnerability in debian debian_linux. EPSS estimates a 1.38% chance of exploitation in the next 30 days, higher than 71.7% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
39/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.3/10
010
High · v3.1 (CVE.org)
EPSS score
1.38%
0%100%
Low · +0.23 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Advisory lineage

Upstream 0 · Downstream 3
DLA-3671-1DSA-5520-1MGASA-2024-0155

Timeline

  1. 25-09-2023
    PublishedVulnerability first disclosed.
  2. 13-02-2025
    Last modifiedVulnerability information updated.

Description

Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.38%

Chance of exploitation in the next 30 days

Percentile

72%

Versus all other CVEs

30-day change

+0.23 pp

From 1.15% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.38%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (fluidattacks.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Debian2 products
  • mediawiki< 1:1.39.5-1~deb12u1 | < 1:1.39.5-1
  • debian_linuxEOL10.0 | 11.0
Mediawiki1 product
Ubuntu1 product
  • mediawikiAll versions (No fix recorded)

3 vendors · 4 products

References

9 links