CVE-2026-30141
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn issue was discovered in bitbank2 AnimatedGIF v2.2.0. A buffer overflow in the DecodeLZW function allows remote attackers to cause a denial of service (crash) or potentially execute arbitrary code via a crafted GIF file.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA buffer overflow vulnerability exists in the DecodeLZW function of the bitbank2 AnimatedGIF library v2.2.0. The LZW decompression algorithm fails to properly validate input sizes during GIF parsing, allowing a specially crafted GIF file to overflow heap or stack buffers. This can lead to denial of service via crash or potentially arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Locate bitbank2 AnimatedGIF library in your codebaseSearch for files named 'AnimatedGIF.cpp', 'AnimatedGIF.h', or containing 'bitbank2' and 'AnimatedGIF' in your project directories and dependenciesAffected if The library files are present in your codebase or dependencies
-
Identify the installed version of AnimatedGIFCheck the version string in the library header file (e.g., AnimatedGIF.h) or version.h, or inspect the source for version definitions like '#define ANIMATED_GIF_VERSION' or similar version constantsAffected if The version is 2.2.0 or earlier without the CVE fix
-
Verify GIF file processing is performed in your applicationSearch your codebase for function calls that process GIF files using the AnimatedGIF library, such as 'GIF.open', 'GIF.decodeFrame', or similar API usage that loads or parses GIF dataAffected if Your application loads, parses, or decodes GIF files using this library
-
Check if DecodeLZW function is used during GIF parsingReview your code or library source to confirm the DecodeLZW function is invoked when processing GIF files - this is the vulnerable function that decompresses LZW dataAffected if GIF files are decoded using the library's LZW decompression routines
-
Inspect input handling for GIF filesExamine how GIF files are received and processed - check if there's validation on the LZW minimum code size and the compressed data stream before calling DecodeLZWAffected if GIF data is passed directly to the library without validation on LZW compressed data integrity or size bounds
Your environment is affected if you use bitbank2 AnimatedGIF library version 2.2.0 or earlier and your application processes GIF files using the DecodeLZW function with untrusted or unsanitized GIF input.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate to a patched version of the library when available; prior to patch, validate and sanitize all GIF files from untrusted sources before processing.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-30141 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-30141 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data