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
Published Feb 16, 2017
9.1
CRITICALCVSS 3.0
EPSS 2.41%
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.
Affected products
No data.
Configuration 1
- ≤ 1.14.9
- 1.10
Configuration 2
- ≤ 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
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
AV:N/AC:L/Au:N/C:N/I:P/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.41% (0.02413) | 83.52th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.42% (0.02424) | 81.99th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.83% (0.00825) | 72.82th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.75% (0.00748) | 81.63th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.75% (0.00748) | 80.35th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.75% (0.00748) | 78.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (6)
- http://www.securityfocus.com/bid/94730 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml
- https://github.com/advisories/GHSA-r8v4-7vwj-983x Advisory
- https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2016-9814
- https://simplesamlphp.org/security/201612-01 x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/94730 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2016-9814.yaml | ||
| https://github.com/advisories/GHSA-r8v4-7vwj-983x | Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/03/msg00001.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-9814 | ||
| https://simplesamlphp.org/security/201612-01 | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.