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NVD / CVE Program· CNA mitre

CVE-2023-29141: An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6, and 1.39.x before 1.39.3.

CriticalCVSS 9.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 39/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.1% (FIRST EPSS); higher than 68.4% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: mediawiki (Debian:10) 1:1.31.16-1+deb10u6; mediawiki (Debian:11) 1:1.35.11-1~deb11u1; mediawiki (Debian:12) 1:1.39.4-1~deb12u1.

Low priority for now. Upgrade to mediawiki (Debian:10) 1:1.31.16-1+deb10u6; mediawiki (Debian:11) 1:1.35.11-1~deb11u1; mediawiki (Debian:12) 1:1.39.4-1~deb12u1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

An issue was discovered in MediaWiki before 1.35.10, 1.36.x through 1.38.x before 1.38.6, and 1.39.x before 1.39.3. An auto-block can occur for an untrusted X-Forwarded-For header.

Published
Mar 31, 2023
Updated
Jun 17, 2026
EPSS
1.1% · 68th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.1%

CISA SSVC decision

Exploitation
proof of concept
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-29141

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
mediawikimediawiki
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora37
  • mediawiki mediawikibefore 1.35.10
  • mediawiki mediawiki1.36.0 and later · before 1.38.6
  • mediawiki mediawiki1.39.0 and later · before 1.39.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:10mediawikibefore 1:1.31.16-1+deb10u61:1.31.16-1+deb10u6
Debian:11mediawikibefore 1:1.35.11-1~deb11u11:1.35.11-1~deb11u1
Debian:12mediawikibefore 1:1.39.4-1~deb12u11:1.39.4-1~deb12u1
Debian:13mediawikibefore 1:1.39.4-11:1.39.4-1
Packagistmediawiki/corefrom 1.38.0 · before 1.38.61.38.6
Packagistmediawiki/corefrom 1.39.0 · before 1.39.31.39.3
Packagistmediawiki/corebefore 1.35.101.35.10

Same product

mediawiki: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-0372Parameters injection in SyntaxHighlight results in multiple vulnerabilities
    60This week
  • CVE-2022-29904The SemanticDrilldown extension for MediaWiki through 1.37.2 (before e688bdba6434591b5dff689a45e4d53459954773) allows SQL injection with…
    44Plan
  • CVE-2017-8809api.php in MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 has a Reflected File Download vulnerability.
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-29139Mar 31, 2023 · An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3.
    26Monitor
  • ← EarlierCVE-2023-29140Mar 31, 2023 · An issue was discovered in the GrowthExperiments extension for MediaWiki through 1.39.3.
    21Monitor
  • Later →CVE-2021-30153Apr 15, 2023 · An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2.
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:mediawiki1:1.39.4-1~deb12u1 · Debian:12Package registry (OSV)
Packagist:mediawiki/core1.35.10Package registry (OSV)
Packagist:mediawiki/core1.38.6Package registry (OSV)
Packagist:mediawiki/core1.39.3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records