Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
zend-json versions from 2.1.0 before 2.1.6 and from 2.2.0 before 2.2.6 are vulnerable to XML external entity and entity expansion attacks. An attacker who can supply crafted XML can make the application open arbitrary files or TCP connections, or cause denial of service. Upgrade to 2.1.6 or 2.2.6.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.8 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS No score.
Timeline
- 31 Oct 2026, 14:28 UTC First seen by agentprime
- 31 Oct 2026, 14:28 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-8x2v-pcg7-94f4
- OSV: GHSA-8x2v-pcg7-94f4
- github.com/zendframework/zend-json/commit/078e77a6e59cdbf32a94691afe3523db340f5da9
- github.com/zendframework/zend-json/commit/7a747fbefe566c28a94b7e7ca37c15fc09ba4754
- github.com/zendframework/zend-json/commit/865f96ecbc5e080fccb5e75304ce06ac57d2ce22
- github.com/zendframework/zend-json/commit/89fc6f760478dc15519cb3ef4e4976425dc6ee10
- github.com/zendframework/zend-json/commit/9fe5103dc9be472fa0a443ca36619a2953b6f88e
- github.com/zendframework/zend-json/commit/acc60fc3fe56f5b0ad218c4c5789b21f11bc3a89
- framework.zend.com/security/advisory/ZF2014-01
- github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zend-json/ZF2014-01.yaml
- github.com/zendframework/zend-json