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CVE

CVE-2026-89043

passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending
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CVE

CVE-2026-89043

passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending

passport-saml-encrypted through 0.1.13 contains an XML signature wrapping vulnerability where signature verification and assertion extraction use independent XPath lookups with no cross-validation. Attackers holding any validly signed SAML message can prepend a forged unsigned assertion that gets accepted as the verified identity while the genuine signature validates against the original assertion.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://www.npmjs.com/package/passport-saml-encrypted, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89043.json, https://nvd.nist.gov/vuln/detail/CVE-2026-89043, https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-xml-signature-wrapping-via-assertion-prepending, https://github.com/krakenjs/passport-saml-encrypted/issues/30, https://github.com/krakenjs/passport-saml-encrypted, https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L256, https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L328

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.0031%
EPSS Percentile
0.21831%
Introduced Version
0
Fix Available
1ab28eb11928d66d50af8f231ccb71f7c1923fda

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