Security Resilience

CVE-2023-29868

Zammad 5.3.0 – 5.4.0

Published
02 May 2023
Modified
30 January 2025
Patch / advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS Score 0.010 63th percentile
Risk Priority 52 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-29868 is a medium-severity Origin Validation Error (CWE-346) vulnerability in Zammad Zammad. Its CVSS base score is 6.5 (Medium).

Operationally, ranked in the top 37% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

Zammad 5.3.x (Fixed in 5.4.0) is vulnerable to Incorrect Access Control. An authenticated attacker with agent and customer roles could perform unauthorized changes on articles where they only have customer permissions.

CWE(s)

Related Threats

CVEs Like This One

CVE-2023-29867Same product: Zammad Zammad
CVE-2026-34720Same product: Zammad Zammad
CVE-2025-32358Same product: Zammad Zammad
CVE-2025-32357Same product: Zammad Zammad
CVE-2023-50455Same product: Zammad Zammad
CVE-2026-34719Same product: Zammad Zammad
CVE-2023-50454Same product: Zammad Zammad
CVE-2026-34721Same product: Zammad Zammad
CVE-2023-50457Same product: Zammad Zammad
CVE-2024-33666Same product: Zammad Zammad

Affected Assets

zammad
zammad
5.3.0 — 5.4.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-346

Requires unique identification of the service before communications, addressing failures to validate the origin of the interaction.

addresses: CWE-346

Trusted path establishment enforces validation that the communication originates from and reaches only the intended trusted system components.

addresses: CWE-346

Enforces validation of the true origin of DNS responses via signatures and chain-of-trust mechanisms.

addresses: CWE-346

Enforces origin validation of name/address data, eliminating reliance on unverified or impersonated DNS sources.

addresses: CWE-346

Mandates origin validation so that only legitimate endpoints can continue the authenticated session.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

degrades

Network security controls enforce origin validation at network boundaries.

degrades

Security of network services includes validating the authenticity of service endpoints.

blocks

A.8.26 requires identifying and specifying requirements for resilience against malicious attacks including SQL injections and input validation (items d, j), plus related protections (authentication, segregation, cryptography per 8.24), which can address some but not most origin validation scenarios such as those involving untrusted cross-origin requests or implicit trust in sources.

blocks

A.8.27 mandates security-by-design principles (defense-in-depth, least privilege, assume-breach, distrust-external-input, zero-trust verification) plus design reviews that can catch and block origin-validation gaps in many common cases, but leaves a bounded remainder (e.g. protocol-level or third-party component origin errors not surfaced by the organization's review process).

prevents

Secure coding practices include implementing proper origin validation to prevent spoofing.

blocks

Secure authentication verifies identity but does not address origin validation of arbitrary data flows.

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-346, a class-level weakness, and none of its children carries one either.

References