CVE-2026-2069
published 2026-02-06CVE-2026-2069: A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of…
PriorityP415low3.3CVSS 3.1
AVLACLPRLUINSUCNINAL
EPSS
0.12%
2.5th percentile
A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of the component GBNF Grammar Handler. This manipulation causes stack-based buffer overflow. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 18993. To fix this issue, it is recommended to deploy a patch.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | llama.cpp | — | — |
| ggml-org | llama.cpp | — | — |
CVSS provenance
nvdv3.13.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
nvdv4.01.9LOWCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvdv2.01.7LOWAV:L/AC:L/Au:S/C:N/I:N/A:P
osv4.8MEDIUM
vendor_debian4.8MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing
ghsa·2026-05-27
CVE-2026-45064 [MEDIUM] CWE-451 Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing
Symfony's HtmlSanitizer URL Attributes Pass Through BiDi Override Characters → Visual href Spoofing
### Description
`Symfony\Component\HtmlSanitizer\TextSanitizer\UrlSanitizer::parse()` (used by `UrlSanitizer::sanitize()` and therefore by every `HtmlSanitizer` config that allows links or media) accepts URLs that contain Unicode explicit-direction BiDi formatting characters: U+202A–U+202E (LRE / RLE / PDF / LRO / RLO) and U+2066–U+2069 (LRI / RLI / FSI / PDI). These characters are passed through unchanged into the `href` / `src` attributes produced by `HtmlSanitizer`. When the resulting HTML is rendered in a browser, the override characters reverse or alter the visual ordering of the URL text, so the displayed link can differ arbitrarily from the actual destination: a classic visual-spoof
GHSA
GHSA-f8m3-93xm-637c: A flaw has been found in ggml-org llama
ghsa_unreviewed·2026-02-07
CVE-2026-2069 [MEDIUM] CWE-119 GHSA-f8m3-93xm-637c: A flaw has been found in ggml-org llama
A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of the component GBNF Grammar Handler. This manipulation causes stack-based buffer overflow. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 18993. To fix this issue, it is recommended to deploy a patch.
OSV
CVE-2026-2069: A flaw has been found in ggml-org llama
osv·2026-02-06·CVSS 4.8
CVE-2026-2069 [MEDIUM] CVE-2026-2069: A flaw has been found in ggml-org llama
A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of the component GBNF Grammar Handler. This manipulation causes stack-based buffer overflow. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 18993. To fix this issue, it is recommended to deploy a patch.
Debian
CVE-2026-2069: llama.cpp - A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the funct...
vendor_debian·2026·CVSS 4.8
CVE-2026-2069 [MEDIUM] CVE-2026-2069: llama.cpp - A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the funct...
A flaw has been found in ggml-org llama.cpp up to 55abc39. Impacted is the function llama_grammar_advance_stack of the file llama.cpp/src/llama-grammar.cpp of the component GBNF Grammar Handler. This manipulation causes stack-based buffer overflow. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 18993. To fix this issue, it is recommended to deploy a patch.
Scope: local
sid: open
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/ggml-org/llama.cpp/https://github.com/ggml-org/llama.cpp/issues/18988https://github.com/ggml-org/llama.cpp/issues/18988#event-4426704865https://github.com/ggml-org/llama.cpp/pull/18993https://github.com/user-attachments/files/24761101/poc.ziphttps://vuldb.com/?ctiid.344636https://vuldb.com/?id.344636https://vuldb.com/?submit.745263
2026-02-06
Published