TI-2023-17432 Aliases CVE-2023-34923 GHSA-5c5q-j6rj-g663

XML Signature Wrapping (XSW) in SAML-based Single Sign-on feature in TOPdesk v12.10.12…

HIGH 70CWE-863Published 2023-06-22 · Updated 2024-12-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-863.

Summary

XML Signature Wrapping (XSW) in SAML-based Single Sign-on feature in TOPdesk v12.10.12 allows bad actors with credentials to authenticate with the Identity Provider (IP) to impersonate any TOPdesk user via SAML Response manipulation.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00741 54th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:topdesk:topdesk:12.10.12:::::::*	12.10.12	Vulnerable	Topdesk

cpe:2.3:a:topdesk:topdesk:12.10.12:*:*:*:*:*:*:* Versions 12.10.12 Vulnerable ·Topdesk

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-34923
2026-10-03 Alias added: GHSA-5c5q-j6rj-g663

References

Exploit 1

https://char49.com/articles/topdesk-vulnerable-to-xml-signature-wrapping-attacks

Other 1

https://my.topdesk.com/tas/public/ssp/content/detail/knowledgeitem?unid=56a16ba1c2824e9a82655892ba75d3c0

TI-2018-07256 Cross-site request forgery (CSRF) vulnerability in TOPdesk before 8.05.017 (June 2018… CVSS 3.1MEDIUM 6.5
TI-2018-07255 Cross-site scripting (XSS) vulnerability in TOPdesk before 8.05.017 (June 2018 version)… CVSS 3.0MEDIUM 6.1
TI-2017-04953 There is reflected XSS in TOPdesk before 5.7.6 and 6.x and 7.x before 7.03.019. CVSS 3.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences