Vulnerability · Published Aug 20, 2026 · Assigned by mitre
CVE-2026-77647
Critical 9.8
In plain English
A critical-severity code injection in SPIP from SPIP. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 83% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
SPIP before 4.4.20 allows unauthenticated remote attackers to execute arbitrary code, as exploited in the wild in August 2026. This is related to incorrect identification of <?php blocks, and var_export's mishandling of certain cases such as presence of a '<' character.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | spip | 4.4.20+dfsg-0+deb13u1 | DEBIAN-CVE-2026-77647 |
| Debian:14 | spip | 4.4.20+dfsg-1 | DEBIAN-CVE-2026-77647 |
| Ubuntu:22.04:LTS | spip | no fix listed | UBUNTU-CVE-2026-77647 |
| Ubuntu:24.04:LTS | spip | no fix listed | UBUNTU-CVE-2026-77647 |
| Ubuntu:26.04:LTS | spip | no fix listed | UBUNTU-CVE-2026-77647 |
Affected products (as reported)
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H