No exploitation reported

CVE-2016-9814

No exploitation reported by the sources we read.

Published2017-02-17
WeaknessCWE-399

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The validateSignature method in the SAML2\Utils class in SimpleSAMLphp before 1.14.10 and simplesamlphp/saml2 library before 1.9.1, 1.10.x before 1.10.3, and 2.x before 2.3.3 allows remote attackers to spoof SAML responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean.

Timeline

dates in UTC

2017-02-1702:59CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-9814?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-9814?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Simplesamlphp saml2

Branch	Affected	Fixed in	Source
1.9	≤ 1.9	no fix published	NVD
1.10	= 1.10	no fix published	NVD
1.10	= 1.10.1	no fix published	NVD
1.10	= 1.10.2	no fix published	NVD
2.0	= 2.0.0	no fix published	NVD
2.0	= 2.0.1	no fix published	NVD
2.1	= 2.1	no fix published	NVD
2.2	= 2.2	no fix published	NVD
2.3	= 2.3	no fix published	NVD
2.3	= 2.3.1	no fix published	NVD
2.3	= 2.3.2	no fix published	NVD

Simplesamlphp

Branch	Affected	Fixed in	Source
1.14	≤ 1.14.9	no fix published	NVD
1.10	= 1.10	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

simplesamlphp.orgVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.1read 2026-10-23
NVDCVSS 2.08.5read 2026-10-23
NVDweakness (CWE)CWE-399read 2026-10-23
FIRST EPSSEPSS score2.4 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Published: 2017-02-17
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-9814?

Is CVE-2016-9814 actively exploited?

Active exploitation of CVE-2016-9814 has not been confirmed. Its EPSS score was 2.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-9814?

CVE-2016-9814 has a CVSS v3 base score of 9.1 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

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