Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Coraza (github.com/corazawaf/coraza/v3) versions 3.0.0 up to but not including 3.8.0 mishandle octal escape sequences in the t:jsDecode transformation, so payloads encoded with octal escapes are decoded incorrectly and can slip past WAF rules that depend on this normalization. An attacker can send such encoded input over the network without authentication, and the protected application may then receive the attack, which can lead to cross-site scripting or SQL injection. Upgrade to Coraza 3.8.0 or later. The source gives no other workaround beyond upgrading.
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 |
|---|---|---|---|---|
| 5.8 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0032, the 25th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:11 UTC First seen by agentprime
- 31 Oct 2026, 14:11 UTC Confirmed by OSV