CVE-2026-27475
highpriority · track · 10EPSS 0.009 · 60 %ileexploit · PoCEUUSEPSS · scored 2026-10-27
SPIP before 4.4.9 allows Insecure Deserialization in the public area through the table_valeur filter and the DATA iterator, which accept serialized data. An attacker who can place malicious serialized content (a pre-condition requiring prior access or another vulnerability) can trigger arbitrary object instantiation and potentially achieve code execution. The use of serialized data in these components has been deprecated and will be removed in SPIP 5. This vulnerability is not mitigated by the SPIP security screen.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.1–9.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- Trachinus/CVE-2026-27475PoC for CVE-2026-27475PoC · poc_in_github
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.htmlcnnvd
- https://git.spip.net/spip/spipcnnvd
- https://git.spip.net/spip/spip/-/tagsPatchcnnvd
- https://www.vulncheck.com/advisories/spip-insecure-deserializationcnnvd
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.htmlenisa_euvd
- https://git.spip.net/spip/spipenisa_euvd
- https://www.vulncheck.com/advisories/spip-insecure-deserializationenisa_euvd
- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-9.htmlRelease NotesVendor Advisorynvd
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