CVE catalog
CVE-2026-88920
An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages via a crafted unsigned SAML sender-vouches assertion
- Severity
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.58% · Oct 25, 2026
An authentication bypass in the DOM security processor in Apache WSS4J allows unauthenticated remote attackers to forge authenticated SOAP messages via a crafted unsigned SAML sender-vouches assertion containing an attacker-controlled key. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | wss4j | sid | 1.6.19-4 | vulnerable |
| Debian | wss4j | forky | 1.6.19-4 | vulnerable |
| Debian | wss4j | trixie | 1.6.19-4 | vulnerable |
| Debian | wss4j | bookworm | 1.6.19-3 | vulnerable |
| Cpe | wss4j | Not reported | 4.0.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | wss4j | source | sid | (unfixed) | not yet assigned | Not reported | [1149856] |
| Debian | wss4j | source | forky | (unfixed) | not yet assigned | Not reported | [1149856] |
| Debian | wss4j | source | trixie | (unfixed) | not yet assigned | Not reported | [1149856] |
| Debian | wss4j | source | bookworm | (unfixed) | not yet assigned | Not reported | [1149856] |
| Cpe | wss4j | cpe | Not reported | 4.0.2 | Not reported | NVD-CVE-2026-88920 | Not reported |
Notes
[trixie] wss4j: Minor issue [bookworm] wss4j: SAML support not built in Debian
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libwss4j-java]Affected
Source package: [wss4j]
Details (2)
1.6.19-3· all · bookwormAffected
nvd · wss4j · debian · bookworm; nvd · wss4j · debian · 12
1.6.19-3· all · bookwormAffected
nvd · wss4j · debian · bookworm; nvd · wss4j · debian · 12
[Debian 13 (Trixie)]
- [libwss4j-java]Affected
Source package: [wss4j]
Details (2)
1.6.19-4· all · trixieAffected
nvd · wss4j · debian · 13
1.6.19-4· all · trixieAffected
nvd · wss4j · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-88920]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-88920]
- [https://security-tracker.debian.org/tracker/CVE-2026-88920]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88920.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]