CVE-2026-31865
- Source
- https://cve.org/CVERecord?id=CVE-2026-31865
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31865.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-31865
- Aliases
- Published
- 2026-03-18T02:50:55.403Z
- Modified
- 2026-04-10T05:42:10.910902Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- Elysia Cookie Value Prototype Pollution
- Details
-
Elysia is a Typescript framework for request validation, type inference, OpenAPI documentation, and client-server communication. Prior to version 1.4.27, an Elysia cookie can be overridden by prototype pollution , eg.
__proto__. This issue is patched in 1.4.27. As a workaround, use t.Cookie validation to enforce validation value and/or prevent iterable over cookie if possible. - Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31865.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-1321" ] }- References
Affected packages
Git / github.com/elysiajs/elysia
Affected ranges
- Type
- GIT
- Repo
- https://github.com/elysiajs/elysia
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
0.*
0.0.0-experimental.28
0.0.0-experimental.29
0.0.0-experimental.37
0.0.0-experimental.39
0.0.0-experimental.51
0.1
0.2.0
0.3
0.4
0.7
0.8.0-exp.10
1.*
1.1.12
1.1.13
1.2.1
1.2.10
1.2.11
1.2.12
1.2.13
1.2.14
1.2.15
1.2.16
1.2.17
1.2.18
1.2.19
1.2.2
1.2.20
1.2.21
1.2.22
1.2.23
1.2.24
1.2.25
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
1.3.0
1.3.1
1.3.10
1.3.11
1.3.12
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
1.3.8
1.3.9
1.4.1
1.4.10
1.4.11
1.4.12
1.4.13
1.4.14
1.4.15
1.4.16
1.4.17
1.4.18
1.4.19
1.4.2
1.4.20
1.4.21
1.4.22
1.4.23
1.4.24
1.4.25
1.4.26
1.4.3
1.4.4
1.4.5
1.4.6
1.4.8
1.4.9
v0.*
v0.4.12
v0.5.1