CVE-2026-26740Disclosure(giflib_project / giflib)

LOWCVSS 8.2 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

giflib_project CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Exploit / PoC references

https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md

Other references

Weakness type (CWE)

CWE-787

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

giflib

Threat summary

3 mentions across 3 observed days
Momentum state: stable

What's happening

Technical details provided in 3 signals
Disclosure: 3 classified signals
Peaked 2d ago at 1 mentions (2026-03-18); latest day: 1
3 total mentions across 3 days

Affected systems

Vendors

giflib_project

Products

giflib

1 version affected across 1 product

Deep dive

Activity timeline3 mentions / 3d

Signal classification1 categories

Disclosure

3100.0%

Referenced assets2 URLs

By indicator

Full discourse3 posts

Ben Livshits@convoluted_code17d
Disclosure
6/ Google's giflib port shows what that buys. A pre-existing out-of-bounds write in the original C was assigned CVE-2026-26740 after the Rust version was already serving production traffic — immune by construction,
Post summary
The post discloses CVE-2026-26740 as a pre-existing out-of-bounds write in the original C giflib and notes that Google's Rust port is immune by construction, without mentioning PoC, exploitation, or explicit remediation.
1001063
8.8K followersView on X
CVE@CVEnew203d
Disclosure
CVE-2026-26740 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 Contr… https://www.cve.org/CVERecord?id=CVE-2026-26740
Post summary
The text discloses a buffer overflow in giflib v.5.2.2 that permits a remote denial‑of‑service attack via EGifGCBToExtension, providing technical details but no PoC, exploit, active exploitation notice, or patch information.
00000151
56.7K followersView on X
The Hacker Wire@TheHackerWire204d
Disclosure
🟠 CVE-2026-26740 - High 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 withou... https://www.thehackerwire.com/vulnerability/CVE-2026-26740/ https://t.co/2VNgkZffeg
Post summary
The post announces a high‑severity buffer overflow in giflib v.5.2.2 that can lead to denial of service, but provides no PoC, exploit, patch, or evidence of active exploitation.
0000030
138 followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	giflib_project	giflib	5.2.2	-	-

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