GHSA-c9ph-gxww-7744

Suggest an improvement
Source
https://github.com/advisories/GHSA-c9ph-gxww-7744
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-c9ph-gxww-7744/GHSA-c9ph-gxww-7744.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-c9ph-gxww-7744
Aliases
  • CVE-2026-41901
Published
2026-05-04T21:15:20Z
Modified
2026-05-13T17:02:46.716315Z
Severity
  • 9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Sandboxed Thymeleaf expressions vulnerable to improper recognition of unauthorized syntax patterns
Details

Impact

A security bypass vulnerability exists in the expression execution mechanisms of Thymeleaf up to and including 3.1.4.RELEASE. Although the library provides mechanisms to avoid the execution of potentially dangerous expressions in some specific sandboxed (restricted) contexts, it fails to properly neutralize specific constructs that allow this kind of expressions to be executed. If an application developer passes to the template engine unsanitized variables that contain such expressions, and these values are used in sandboxed contexts inside the templates, these expressions can be executed achieving Server-Side Template Injection (SSTI).

Patches

This has been fixed in Thymeleaf 3.1.5.RELEASE. All users are advised to upgrade immediately.

Workarounds

No workaround is available beyond ensuring applications do not pass unvalidated/unsanitized data directly to the template engine. Upgrading to 3.1.5.RELEASE is strongly recommended in any case.

Database specific 
{
    "github_reviewed_at": "2026-05-04T21:15:20Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-1336",
        "CWE-917"
    ],
    "nvd_published_at": "2026-05-12T23:16:17Z",
    "severity": "CRITICAL"
}
References

Affected packages

Maven / org.thymeleaf:thymeleaf

Package

Name
org.thymeleaf:thymeleaf
View open source insights on deps.dev
Purl
pkg:maven/org.thymeleaf/thymeleaf

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.5.RELEASE

Affected versions

Other
m1
1.*
1.0.0-beta1
1.0.0-beta2
1.0.0-beta3
1.0.0-beta4
1.0.0-beta5
1.0.0
1.0.1
1.1.0
1.1.1
1.1.2
1.1.3
1.1.4
1.1.5
2.*
2.0.0-beta1
2.0.0-beta2
2.0.0
2.0.1
2.0.2
2.0.3
2.0.4
2.0.5
2.0.6
2.0.7
2.0.8
2.0.9
2.0.10
2.0.11
2.0.12
2.0.13
2.0.14
2.0.15
2.0.16
2.0.17
2.0.18
2.0.19
2.0.20
2.0.21
2.1.0-beta1
2.1.0-beta2
2.1.0-m1
2.1.0-m2
2.1.0-m3
2.1.0.RELEASE
2.1.1.RELEASE
2.1.2.RELEASE
2.1.3.RELEASE
2.1.4.RELEASE
2.1.5.RELEASE
2.1.6.RELEASE
3.*
3.0.0.ALPHA01
3.0.0.ALPHA02
3.0.0.ALPHA03
3.0.0.BETA01
3.0.0.BETA02
3.0.0.BETA03
3.0.0.RELEASE
3.0.1.RELEASE
3.0.2.RELEASE
3.0.3.RELEASE
3.0.4.RELEASE
3.0.5.RELEASE
3.0.6.RELEASE
3.0.7.RELEASE
3.0.8.RELEASE
3.0.9.RELEASE
3.0.10.RELEASE
3.0.11.RELEASE
3.0.12.RELEASE
3.0.13.RELEASE
3.0.14.RELEASE
3.0.15.RELEASE
3.1.0.M1
3.1.0.M2
3.1.0.M3
3.1.0.RC1
3.1.0.RC2
3.1.0.RELEASE
3.1.1.RELEASE
3.1.2.RELEASE
3.1.3.RELEASE
3.1.4.RELEASE

Database specific

last_known_affected_version_range 
"<= 3.1.4.RELEASE"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-c9ph-gxww-7744/GHSA-c9ph-gxww-7744.json"

Maven / org.thymeleaf:thymeleaf-spring5

Package

Name
org.thymeleaf:thymeleaf-spring5
View open source insights on deps.dev
Purl
pkg:maven/org.thymeleaf/thymeleaf-spring5

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.5.RELEASE

Affected versions

3.*
3.0.3.M1
3.0.4.M2
3.0.5.M3
3.0.6.M4
3.0.7.RC1
3.0.8.RELEASE
3.0.9.RELEASE
3.0.10.RELEASE
3.0.11.RELEASE
3.0.12.RELEASE
3.0.13.RELEASE
3.0.14.RELEASE
3.0.15.RELEASE
3.1.0.M1
3.1.0.M2
3.1.0.M3
3.1.0.RC1
3.1.0.RC2
3.1.0.RELEASE
3.1.1.RELEASE
3.1.2.RELEASE
3.1.3.RELEASE
3.1.4.RELEASE

Database specific

last_known_affected_version_range 
"<= 3.1.4.RELEASE"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-c9ph-gxww-7744/GHSA-c9ph-gxww-7744.json"

Maven / org.thymeleaf:thymeleaf-spring6

Package

Name
org.thymeleaf:thymeleaf-spring6
View open source insights on deps.dev
Purl
pkg:maven/org.thymeleaf/thymeleaf-spring6

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.5.RELEASE

Affected versions

3.*
3.1.0.M1
3.1.0.M2
3.1.0.M3
3.1.0.RC1
3.1.0.RC2
3.1.0.RELEASE
3.1.1.RELEASE
3.1.2.RELEASE
3.1.3.RELEASE
3.1.4.RELEASE

Database specific

last_known_affected_version_range 
"<= 3.1.4.RELEASE"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-c9ph-gxww-7744/GHSA-c9ph-gxww-7744.json"