CVE•Published 2026-03-18•Modified 2026-07-23•1 article on news•6 live references•NVD data
CVE-2026-26740Giflib_project · Giflib
Vulnerability data via NVD (ingested)
CVSS v3.1
8.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
EPSS percentile
46
Exploit Prediction Scoring System · top 54% of all CVEs
Weaknesses (CWE)
Description
Buffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker to cause a denial of service via the EGifGCBToExtension overwriting an existing Graphic Control Extension block without validating its allocated size.
Timeline
Published 2026-03-18
Modified 2026-07-23
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-26740Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Giflib Project Giflib" version:"5.2.2"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Giflib"HTTP body or banner mentions "Giflib" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-26740Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-26740Censys host search filtered to this CVE id.
grep.app
CVE-2026-26740Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-26740GitHub code search for direct mentions.
Google dork
"CVE-2026-26740" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-26740 on GitHub.