What’s Vulnerable › Vulnerabilities
CVE-2020-15216: Signature Validation Bypass in goxmldsig
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-09-29 · updated 2026-06-17
- Weakness: CWE-347
Description
In goxmldsig (XML Digital Signatures implemented in pure Go) before version 1.1.0, with a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one. A patch is available, all users of goxmldsig should upgrade to at least revision f6188febf0c29d7ffe26a0436212b19cb9615e64 or version 1.1.0
Affected products
- Fedoraproject Fedora: 32, 33
- russellhaering goxmldsig: before 1.1.0 — fixed in 1.1.0
How to fix
Upgrade to a fixed version: russellhaering goxmldsig 1.1.0. Check the vendor advisory for mitigations.
References
- https://github.com/russellhaering/goxmldsig/commit/f6188febf0c29d7ffe26a0436212b19cb9615e64
- https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUH33FPUXED3FHYL25BJOQPRKFGPOMS2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZECBFD4M4PHBMBOCMSQ537NOU37QOVWP/
- https://pkg.go.dev/github.com/russellhaering/goxmldsig?tab=overview
- https://github.com/russellhaering/goxmldsig/commit/f6188febf0c29d7ffe26a0436212b19cb9615e64
- https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GUH33FPUXED3FHYL25BJOQPRKFGPOMS2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZECBFD4M4PHBMBOCMSQ537NOU37QOVWP/
- https://pkg.go.dev/github.com/russellhaering/goxmldsig?tab=overview
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