High severity · published Sep 10, 2026
CVE-2026-89043
passport-saml-encrypted through 0.1.13 XML Signature Wrapping via Assertion Prepending
7.4
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
passport-saml-encrypted · krakenjs
through 0.1.13 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89043
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-89043
github.com
https://github.com/krakenjs/passport-saml-encrypted
github.com
https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L256
github.com
https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L328
github.com
https://github.com/krakenjs/passport-saml-encrypted/issues/30
www.vulncheck.com
https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-xml-signature-wrapping-via-assertion-prepending
More from passport-saml-encrypted
9.1
CVE-2026-89042
passport-saml-encrypted through 0.1.13 Authentication Bypass via Missing Signature Verification