Sign in
Deutsch English Español Polski
Medium

SimpleSAMLphp allows timing side-channel attacks

  • Disclosed: 14.05.2022
  • Updated: 11.10.2026 10:22

The (1) Htpasswd authentication source in the authcrypt module and (2) SimpleSAML_Session class in SimpleSAMLphp 1.14.11 and earlier allow remote attackers to conduct timing side-channel attacks by leveraging use of the standard comparison operator to compare secret material against user input.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package simplesamlphp/simplesamlphp < 1.15.0-rc1 1.15.0-rc1

References

CVSS score 5.9/10
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-200
Platform
Composer
Package
simplesamlphp/simplesamlphp
Disclosed
14.05.2022
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-v882-949x-6v28 - CC BY 4.0

Vulnerability history: simplesamlphp/simplesamlphp

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (23) in the archive
Total entries
23
First → latest
01.2020 07.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 4
  • Medium 12
  • Low 4

Disclosures per year

Severity:
  1. SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`
    High · 7.1 CVE-2026-49284 >= 2.5.0, < 2.5.2, < 2.4.7 2.5.2, 2.4.7
  2. SimpleSAMLphp Session fixation issue and authentication bypass in the authcrypt module
    Critical · 9.8 CVE-2017-12868 >= 1.14.12, < 1.14.14 1.14.14
  3. SimpleSAMLphp Authentication context bypass in the multiauth module
    High · 7.5 CVE-2017-12869 < 1.14.14 1.14.14
  4. SimpleSAMLphp Signature validation bypass
    High · 8.1 CVE-2017-18122 < 1.14.17 1.14.17
  5. SimpleSAMLphp allows timing side-channel attacks this entry
    Medium · 5.9 CVE-2017-12872 < 1.15.0-rc1 1.15.0-rc1
  6. SimpleSAMLphp Use of insecure connection charset (sqlauth module)
    Critical · 9.8 CVE-2018-6521 < 1.15.2 1.15.2
  7. simpleSAMLphp incorrectly handles XML encryption
    High · 7.5 CVE-2011-4625 < 1.8.1 1.8.1
  8. Incorrect persistent NameID generation in SimpleSAMLphp
    Critical · 9.8 CVE-2017-12873 >= 1.7.0, < 1.14.11 1.14.11

Know which vulnerabilities affect your application

With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.

Connect your application
DockRay newsletter

Application security in your inbox

Important vulnerabilities, actionable guidance and practical advice for your applications. Choose your technologies and follow what matters to your project.

  • A daily digest of new vulnerabilities, critical ones included.
  • Notifications about important updates.
  • Practical advice on application security and monitoring.

Leave empty to receive updates for every technology.

Privacy policy

Free to subscribe. Unsubscribe with one click in any email.