Vulnerability Reportmattermost/mattermost-team-edition:12.0.1

mattermost/mattermost-team-edition:latestmattermost/mattermost-team-edition:12.0mattermost/mattermost-team-edition:release-12.0mattermost/mattermost-team-edition:12.0.1
digestsha256:8ca1050cb8a2ec1ec0be5aff90ee40aa03e134f48443f7526b7b2b18872cf31b

Executive Summary

Last scanned:

Threat Score
27/100NEEDS ATTENTION
Reputation
RELIABLE

This image is acceptable for production, but remediating the identified vulnerabilities is recommended to reduce the attack surface. The scan found 43 findings in total, and the two most relevant ones are both denial-of-service flaws in the Go HTTP/2 library, CVE-2026-78669 and CVE-2026-78659. A malicious client could slow or crash Mattermost, but these flaws do not allow data theft or code execution and are not known to be exploited. Note: both CVEs only apply when TLS is enabled on the Mattermost listener, so plain HTTP deployments are not affected. Updating golang.org/x/net to a fixed release would address both flaws.

Hardening plan for this image · 5 steps

Included in Pro

Scanning procedure

  1. Vulnerability scan
    Full CVE sweep across OS packages and app dependencies
  2. Exploitability check
    CVEs ranked by exploit probability (EPSS) and matched against CISA KEV
  3. Reachability analysis
    Symbol-level proof: is the vulnerable code even linked and callable in your binaries?
  4. Runtime verification
    Live-container probes: exposed endpoints, feature flags, real defaults
  5. Supply chain analysis
    Base-image lineage, package provenance and signatures — nothing slipped in unnoticed
  6. Hardening recommendations
    A hardened build plan — patch, remove unused packages, lock down the runtime — with parity tests proving nothing broke

Vulnerabilities

Vulnerability Log

45 total
CVE IDAdjusted SeverityPackageExploit ProbabilityRisk Context
CVE-2026-78669MEDIUM6
golang.org/x/net
v0.58.0
fixed in 0.60.0
0.6%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-78659MEDIUM6
golang.org/x/net
v0.58.0
fixed in 0.60.0
0.6%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-6368MEDIUM5.5
libc6
2.36-9+deb12u14
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2026-8674MEDIUM5.3
libc6
2.36-9+deb12u14
No fix yet
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-75806MEDIUM5.3
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u2
1.1%
Low-Moderate Risk
Directly Exposed
CVE-2026-42767MEDIUM5.3
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u1
0.6%
Theoretical Threat
Directly Exposed
CVE-2026-5450MEDIUM5
libc6
2.36-9+deb12u14
No fix yet
0.5%
Theoretical Threat
Directly Exposed
CVE-2026-5928MEDIUM5
libc6
2.36-9+deb12u14
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-18374MEDIUM4.9
libc6
2.36-9+deb12u14
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2026-97032MEDIUM4.72
golang.org/x/net
v0.58.0
fixed in 0.60.0
0.5%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-63072MEDIUM4.5
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u1
0.9%
Theoretical Threat
Directly Exposed
CVE-2026-63076MEDIUM4.5
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u1
1.6%
Low-Moderate Risk
Directly Exposed
CVE-2026-54874MEDIUM4.5
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u1
0.6%
Theoretical Threat
Directly Exposed
CVE-2026-63074MEDIUM4.5
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u1
0.6%
Theoretical Threat
Directly Exposed
CVE-2026-78660MEDIUM4.5
golang.org/x/net
v0.58.0
fixed in 0.60.0
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-84782MEDIUM4.44
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u2
0.8%
Theoretical Threat
Directly Exposed
CVE-2026-78663MEDIUM4.24
golang.org/x/net
v0.58.0
fixed in 0.60.0
0.6%
Theoretical Threat
Directly ExposedContext importance: MEDIUM
CVE-2026-86805MEDIUM4.2
libc6
2.36-9+deb12u14
No fix yet
<0.1%
Theoretical Threat
Directly Exposed
CVE-2026-95818MEDIUM4.2
libc6
2.36-9+deb12u14
No fix yet
0.1%
Theoretical Threat
Directly Exposed
CVE-2026-19542MEDIUM4.2
libc6
2.36-9+deb12u14
No fix yet
0.2%
Theoretical Threat
Directly Exposed
CVE-2026-89092MEDIUM4.2
libc6
2.36-9+deb12u14
No fix yet
0.2%
Theoretical Threat
Directly Exposed
CVE-2026-19499MEDIUM4.08
libc6
2.36-9+deb12u14
No fix yet
0.3%
Theoretical Threat
Directly Exposed
DLA-4845-1MEDIUM4
ca-certificates
20250419~deb12u1
fixed in 20250419~deb12u2
—
Directly Exposed
GO-2026-5932MEDIUM4
golang.org/x/crypto
v0.57.0
No fix yet
—
Directly Exposed
CVE-2026-6238LOW3.9
libc6
2.36-9+deb12u14
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2010-4756LOW3.9
libc6
2.36-9+deb12u14
No fix yet
2.6%
Low-Moderate Risk
Directly Exposed
CVE-2018-20796LOW3.9
libc6
2.36-9+deb12u14
No fix yet
5.8%
Low-Moderate Risk
Directly Exposed
CVE-2019-1010022LOW3.9
libc6
2.36-9+deb12u14
No fix yet
3.2%
Low-Moderate Risk
Directly Exposed
CVE-2019-1010023LOW3.9
libc6
2.36-9+deb12u14
No fix yet
3.1%
Low-Moderate Risk
Directly Exposed
CVE-2019-1010024LOW3.9
libc6
2.36-9+deb12u14
No fix yet
3.2%
Low-Moderate Risk
Directly Exposed
CVE-2019-1010025LOW3.9
libc6
2.36-9+deb12u14
No fix yet
2.5%
Low-Moderate Risk
Directly Exposed
CVE-2019-9192LOW3.9
libc6
2.36-9+deb12u14
No fix yet
2.4%
Low-Moderate Risk
Directly Exposed
CVE-2026-97399LOW3.7
libc6
2.36-9+deb12u14
No fix yet
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-35189LOW3.7
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u2
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-75803LOW3.7
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u1
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-5435LOW3.54
libc6
2.36-9+deb12u14
No fix yet
0.2%
Theoretical Threat
Directly Exposed
CVE-2026-6791LOW3.54
libc6
2.36-9+deb12u14
No fix yet
0.2%
Theoretical Threat
Directly Exposed
CVE-2026-77117LOW3.54
libc6
2.36-9+deb12u14
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-80489LOW3.54
libc6
2.36-9+deb12u14
No fix yet
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-54872LOW3.54
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u2
0.4%
Theoretical Threat
Directly Exposed
CVE-2026-75805LOW3.54
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u2
0.3%
Theoretical Threat
Directly Exposed
CVE-2026-77696LOW3.54
libssl3
3.0.20-1~deb12u2
fixed in 3.0.22-1~deb12u2
0.4%
Theoretical Threat
Directly Exposed
CVE-2025-27587LOW2.12
libssl3
3.0.20-1~deb12u2
No fix yet
0.4%
Theoretical Threat
Directly Exposed
DLA-4792-1NONE0
tzdata
2026b-0+deb12u1
fixed in 2026c-0+deb12u1
—
Not Applicable
DLA-4854-1NONE0
tzdata
2026b-0+deb12u1
fixed in 2026e-0+deb12u1
—
Not Applicable

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