CVE-2016-9814: simplesamlphp saml2 Resource Management Errors
Vulnerability summary
CVE-2016-9814 is a critical (CVSS 9.1) Resource Management Errors vulnerability in simplesamlphp saml2. EPSS estimates a 2.41% chance of exploitation in the next 30 days, higher than 83.9% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 16-02-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.1CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS trend
Probability
2.41%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
+0.18 pp
From 2.23% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Simplesamlphp2 products
- saml2≤ 1.9 | 1.10 | 1.10.1 | 1.10.2 | 2.0.0 | 2.0.1 | 2.1 | 2.2 | 2.3 | 2.3.1 | 2.3.2
- simplesamlphp≤ 1.14.9 | 1.10
Debian1 product
- simplesamlphp< 1.14.10-1
Ubuntu1 product
- simplesamlphpAll versions (No fix recorded)
3 vendors · 4 products