CVE-2026-4151VulnerabilityPublished 19 Mar 2026

ZDI-26-218: GIMP ANI File Parsing Integer Overflow Remote Code Execution Vulnerability

Source Zero Day Initiative

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Not known to be exploited.

Data as of 30 Oct 2026, 11:52 UTC

Severity

High

Rated High by Zero Day Initiative · No CVSS score from NVD or the CNA

EPSS: 0.6% chance of exploitation in 30 days – higher than 51% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

Exploitation evidence

Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

remote

What to do

AI-suggested

An official patch is available from GIMP to correct this vulnerability. Users and administrators should apply the update provided at https://gitlab.gnome.org/GNOME/gimp/-/commit/09e5459de913172fc51da3bd6b6adc533acd368e as soon as possible to mitigate the risk. No additional vendor-recommended mitigations are noted.

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of GIMP. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-4151.

Impact

Successful exploitation allows remote code execution with the privileges of the user running GIMP. This can lead to full compromise of the affected system or user environment. User interaction is required, limiting exploitation to scenarios where a user opens a malicious ANI file or visits a malicious webpage. The vulnerability impacts confidentiality, integrity, and availability of the affected system.

Summary

CVE-2026-4151 is an integer overflow vulnerability in the ANI file parser of GIMP. The vulnerability occurs due to insufficient validation of user input, which can cause an integer overflow during buffer allocation. This flaw enables remote attackers to execute arbitrary code within the context of the GIMP process if a user opens a crafted ANI file or visits a malicious page. The vulnerability has a CVSS score of 7.8 (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). GIMP has issued an official patch to remediate this vulnerability.

References

zerodayinitiative.com/advisories/ZDI-26-218/ (opens in a new tab)

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