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CVE-2020-15216

Signature Validation Bypass in goxmldsig

5.3 MediumFix available

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

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.90%Down 0.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 5.3

Signature Validation Bypass in goxmldsig

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

Record
CVE-2020-15216
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-347
Updated
2026-11-02
EUVDEUVD-2021-1160 5.3

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

Record
EUVD-2021-1160
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-q547-gmf8-8jr7 5.3

github.com/russellhaering/goxmldsig vulnerable to Signature Validation Bypass

Impact

With a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one.

Patches

A patch is available, all users of goxmldsig should upgrade to v1.1.0.

For more information

If you have any questions or comments about this advisory open an issue at https://github.com/russellhaering/goxmldsig

Record
GHSA-q547-gmf8-8jr7
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-347
Updated
2026-11-02
NVD 5.3

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

Record
CVE-2020-15216
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-347
Updated
2026-11-02
OSV 6.5

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

Record
CVE-2020-15216
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2020-15216 6.5

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

Record
DEBIAN-CVE-2020-15216
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVGHSA-q547-gmf8-8jr7 5.3

github.com/russellhaering/goxmldsig vulnerable to Signature Validation Bypass

Impact

With a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one.

Patches

A patch is available, all users of goxmldsig should upgrade to v1.1.0.

For more information

If you have any questions or comments about this advisory open an issue at https://github.com/russellhaering/goxmldsig

Record
GHSA-q547-gmf8-8jr7
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness
CWE-347
Updated
2026-11-02
OSVUBUNTU-CVE-2020-15216 5.3

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

Record
UBUNTU-CVE-2020-15216
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVGO-2020-0050 No score

XML digital signature validation bypass in github.com/russellhaering/goxmldsig

Due to the behavior of encoding/xml, a crafted XML document may cause XML Digital Signature validation to be entirely bypassed, causing an unsigned document to appear signed.

Record
GO-2020-0050
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/russellhaering/goxmldsig
Go
 before 1.1.0
1.1.0
golang-github-russellhaering-goxmldsig
Debian:12
 before 1.1.0-1
1.1.0-1
golang-github-russellhaering-goxmldsig
Ubuntu:18.04:LTS
 All versions, plus listed versions
0.0~git20170911.b7efc62-1
 None known
golang-github-russellhaering-goxmldsig
Ubuntu:20.04:LTS
 All versions, plus listed versions
0.0~git20170911.b7efc62-10.0~git20180430.7acd5e4-1
 None known
golang-github-russellhaering-goxmldsig
Ubuntu:22.04:LTS
 All versions, plus listed versions
1.1.0-11.1.1-1
 None known

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-15216 is a medium vulnerability (CVSS 5.3) in Goxmldsig Project Goxmldsig, published September 29, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.90%, the 59th percentile. Fixed in github.com/russellhaering/goxmldsig 1.1.0.

References

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