Audit logging fails to sanitize post metadata

published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also GHSA-9rww-66w7-7vjx , EUVD-2023-2262

cvss: 4.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits: 0; none known

Mattermost fails to sanitize post metadata during audit logging resulting in permalinks contents being logged

Patch / fix

fixed in 2

go github.com/mattermost/mattermost-server/v6 7.8.8, 7.9.6, 7.10.4
Mattermost Mattermost 7.8.8, 7.9.6, 7.10.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-271-02 updated 2023-09-26 cvss 8.0

DEXMA DexGate

DEXMA DEXGate 20130114
affected: mitigation “Dexma has not responded to CISA's requests to coordinate at this time.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-10-03)

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub	3.1	4.5	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
go	github.com/mattermost/mattermost-server/v6	<7.8.8 >=7.9.0, <7.9.6 >=7.10.0, <7.10.4	7.8.8 7.9.6 7.10.4

Affected products

Mattermost Mattermost

Classification

Weakness

CWE-532 Insertion of Sensitive Information into Log File
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

mattermost.com /security-updates
web, vendor-advisory
nvd.nist.gov /vuln/detail/CVE-2023-4108
advisory
github.com /mattermost/mattermost
package

Sources

CVE List CVE-2023-4108
GitHub Advisory GHSA-9rww-66w7-7vjx
NVD CVE-2023-4108

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary