CVE-2016-9955: n/a vulnerability

CVE-2016-9955: The SimpleSAML_XML_Validator class constructor in SimpleSAMLphp before 1.14.11 might allow remote attackers...

The SimpleSAML_XML_Validator class constructor in SimpleSAMLphp before 1.14.11 might allow remote attackers to spoof signatures on SAML 1 responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 03:07 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw affects SimpleSAMLphp versions before 1.14.11. It could let a remote attacker make a SAML 1 response appear valid when its signature should not be trusted, or potentially consume memory and disrupt service. The business risk is highest where SimpleSAMLphp is part of login or federation flows. Exposure is likely limited to deployments running SimpleSAMLphp before 1.14.11, especially systems processing SAML 1 responses. The bundle does not provide CPEs, affected platform details, or deployment prerequisites. Treat this as high priority for identity infrastructure because signature spoofing in authentication flows can affect trust decisions. Urgency depends on whether your environment runs vulnerable SimpleSAMLphp and still handles SAML 1 responses. Mitigation focus: Upgrade SimpleSAMLphp to 1.14.11 or a later supported release.; Apply the relevant Debian LTS simplesamlphp security update where Debian packages are used.; Check the SimpleSAMLphp advisory for vendor-specific remediation details..

Prepared: Jun 13, 2026, 06:20 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 16, 2017, 18:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://simplesamlphp.org/security/201612-02CVE reference · x_refsource_CONFIRM
[debian-lts-announce] 20180302 [SECURITY] [DLA 1297-1] simplesamlphp security updateCVE reference · mailing-list, x_refsource_MLIST

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

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