Which products and versions are affected by CVE-2023-27372?

Affected: Spip versions 4.2.0, 4.2.0-alpha, 4.2.0-alpha2; Debian Linux versions 11.0. The full list is in the CVE brief.

Is CVE-2023-27372 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed since May 3, 2023.

Is CVE-2023-27372 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2023-27372?

Public exploit code is available.

Is there a fix for CVE-2023-27372?

Fixed versions are available, including Spip 3.1.4-4~deb9u5ubuntu0.1~esm2, Spip 3.2.11-3+deb11u7, Spip 3.2.4-1+deb10u10.

How urgently should CVE-2023-27372 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2023-27372

CriticalExploitedPublic exploit

SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because serialization is mishandled.

Published Feb 28, 2023 · Updated Aug 7, 2026 · Also known as DEBIAN-CVE-2023-27372, DSA-5367-1, UBUNTU-CVE-2023-27372

Key Facts

Patch immediately

CVE-2023-27372 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Spip, Debian Linux.
It is exploited in the wild, listed in Industry KEV feed since May 3, 2023. Public exploit code is available.
EPSS estimates a 100% probability of exploitation in the next 30 days.
Fixed versions are available, including Spip 3.1.4-4~deb9u5ubuntu0.1~esm2, Spip 3.2.11-3+deb11u7, Spip 3.2.4-1+deb10u10.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

100%

Higher than 99.9% of all scored CVEs

Exploited in the wild

Yes

1 catalog listing

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2023-27372 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because serialization is mishandled. The fixed versions are 3.2.18, 4.0.10, 4.1.8, and 4.2.1.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	May 3, 2023	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

18 affected entries in total

Product	Affected versions	Fixed in
SpipSpip	4.2.0, 4.2.0-alpha, 4.2.0-alpha2	3.2.18
Debian LinuxDebian	11.0	n/a

Patched Releases

Spip

3.1.4-4~deb9u5ubuntu0.1~esm2, 3.2.11-3+deb11u7, 3.2.4-1+deb10u10, 3.2.7-1ubuntu0.1+esm2, 4.1.8+dfsg-1, 3.2.18

Timeline

Publicly disclosed
Feb 28, 2023
Added to Industry KEV feed
May 3, 2023
Last updated
Aug 7, 2026

Weakness Type

CWE-502 Deserialization of Untrusted Data

References

12 more references in the full CVE brief

FAQ

Common Questions.

SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because serialization is mishandled.
Affected: Spip versions 4.2.0, 4.2.0-alpha, 4.2.0-alpha2; Debian Linux versions 11.0. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since May 3, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Spip 3.1.4-4~deb9u5ubuntu0.1~esm2, Spip 3.2.11-3+deb11u7, Spip 3.2.4-1+deb10u10.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2023-27372 Running On Your Attack Surface?

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