CVE-2026-120452: gPhoto libgphoto2

libgphoto2 through 2.5.34 Heap Out-of-Bounds Read/Write via jl2005c Thumbnail Conversion

CVSS 5.2 MediumEPSS 0.0019 · 8th percentile

Published by the CVE Program (CNA: VulnCheck) at 2 Nov 2026, 14:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
gPhoto	libgphoto2	affected 2.5.34 and earlier semver Other versions: unaffected

Identifiers

CVE-2026-120452

CNA

VulnCheck

Weakness (CWE)

CWE-787

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.2	Medium	4.0	CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
5.4	Medium	3.1	CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0019, the 8th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

2 Nov 2026, 14:29 UTC Confirmed by the CVE List
2 Nov 2026, 14:37 UTC First seen by agentprime
2 Nov 2026, 15:17 UTC Confirmed by NVD

Sources

References from the CNA

github.com/gphoto/libgphoto2/issues/1326 issue-tracking
github.com/gphoto/libgphoto2/commit/af3b8e9c542cda863fb5f2f3cfeb261bd78e4442 patch
github.com/gphoto/libgphoto2/commit/30bf7ace6d47cfe1232ea73bde2aceb95aba4bfb patch
github.com/gphoto/libgphoto2/blob/v2.5.34/camlibs/jl2005c/jl2005bcd_decompress.c#L127-L130 technical-description
hackmd.io/@haindpwn/libgphoto2-jl2005c-init-alloc-table-buffer-overflow technical-description
www.vulncheck.com/advisories/libgphoto2-through-2.5.34-heap-out-of-bounds-read-write-via-jl2005c-thumbnail-conversion third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.