MediumFix available
flameshot — security advisory
Flameshot is powerful yet simple to use screenshot software. Prior to 14.0.0, the Open With feature wrote screenshots to a predictable temporary path and followed symlinks, creating a time-of-check to time-of-use race that allowed a local unprivileged attacker on the same machine to pre-plant a symlink and cause Flameshot to write PNG data through it, overwriting any file the victim user could write. This issue is fixed in version 14.0.0.
- Products
- flameshot
- Affected versions
- 12.1.0+ds-1, 12.1.0+ds-2, 12.1.0+ds-3, 12.1.0+ds-4, 12.1.0-2, 12.1.0-3, 13.3.0+git20251204-1, 13.3.0+git20251204-1~bpo13+1, 13.3.0+git20251204-2, 13.3.0-1, 13.3.0-1~bpo13+1, 13.3.0-2, 14.0.0-1, 14.0.0-2, 14.0.0-3, 14.0.0-4
- Fixed versions
- 14.0.0-1
- CVEs
- CVE-2026-62294
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:53 UTC · Revision 2
Source evidence
Flameshot is powerful yet simple to use screenshot software. Prior to 14.0.0, the Open With feature wrote screenshots to a predictable temporary path and followed symlinks, creating a time-of-check to time-of-use race that allowed a local unprivileged attacker on the same machine to pre-plant a symlink and cause Flameshot to write PNG data through it, overwriting any file the victim user could write. This issue is fixed in version 14.0.0.
osv:DEBIAN-CVE-2026-62294
flameshot
Fixed versions: Not specified
flameshot
Fixed versions: Not specified
flameshot
Fixed versions: 14.0.0-1
Complete source record
{
"id": "7258aa07e38a77c5735cf315d894310966a3e2c4520a13fb659fc443830a36e6",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-62294",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-62294",
"summary": "Flameshot is powerful yet simple to use screenshot software. Prior to 14.0.0, the Open With feature wrote screenshots to a predictable temporary path and followed symlinks, creating a time-of-check to time-of-use race that allowed a local unprivileged attacker on the same machine to pre-plant a symlink and cause Flameshot to write PNG data through it, overwriting any file the victim user could write. This issue is fixed in version 14.0.0.",
"evidence": "osv:DEBIAN-CVE-2026-62294",
"products": [
{
"name": {
"value": "flameshot",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "12.1.0+ds-1",
"evidence": "/affected/0/versions"
},
{
"value": "12.1.0+ds-2",
"evidence": "/affected/0/versions"
},
{
"value": "12.1.0+ds-3",
"evidence": "/affected/0/versions"
},
{
"value": "12.1.0+ds-4",
"evidence": "/affected/0/versions"
},
{
"value": "12.1.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "12.1.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "13.3.0+git20251204-1",
"evidence": "/affected/0/versions"
},
{
"value": "13.3.0+git20251204-1~bpo13+1",
"evidence": "/affected/0/versions"
},
{
"value": "13.3.0+git20251204-2",
"evidence": "/affected/0/versions"
},
{
"value": "13.3.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "13.3.0-1~bpo13+1",
"evidence": "/affected/0/versions"
},
{
"value": "13.3.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "14.0.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "14.0.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "14.0.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "14.0.0-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "flameshot",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "12.1.0+ds-2",
"evidence": "/affected/1/versions"
},
{
"value": "12.1.0+ds-3",
"evidence": "/affected/1/versions"
},
{
"value": "12.1.0+ds-4",
"evidence": "/affected/1/versions"
},
{
"value": "13.3.0+git20251204-1",
"evidence": "/affected/1/versions"
},
{
"value": "13.3.0+git20251204-1~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "13.3.0+git20251204-2",
"evidence": "/affected/1/versions"
},
{
"value": "13.3.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "13.3.0-1~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "13.3.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "14.0.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "14.0.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "14.0.0-3",
"evidence": "/affected/1/versions"
},
{
"value": "14.0.0-4",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "flameshot",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "14.0.0-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "12.1.0+ds-2",
"evidence": "/affected/2/versions"
},
{
"value": "12.1.0+ds-3",
"evidence": "/affected/2/versions"
},
{
"value": "12.1.0+ds-4",
"evidence": "/affected/2/versions"
},
{
"value": "13.3.0+git20251204-1",
"evidence": "/affected/2/versions"
},
{
"value": "13.3.0+git20251204-1~bpo13+1",
"evidence": "/affected/2/versions"
},
{
"value": "13.3.0+git20251204-2",
"evidence": "/affected/2/versions"
},
{
"value": "13.3.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "13.3.0-1~bpo13+1",
"evidence": "/affected/2/versions"
},
{
"value": "13.3.0-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-62294",
"aliases": [
"DEBIAN-CVE-2026-62294"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "flameshot",
"purl": "pkg:deb/debian/flameshot?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"12.1.0+ds-1",
"12.1.0+ds-2",
"12.1.0+ds-3",
"12.1.0+ds-4",
"12.1.0-2",
"12.1.0-3",
"13.3.0+git20251204-1",
"13.3.0+git20251204-1~bpo13+1",
"13.3.0+git20251204-2",
"13.3.0-1",
"13.3.0-1~bpo13+1",
"13.3.0-2",
"14.0.0-1",
"14.0.0-2",
"14.0.0-3",
"14.0.0-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62294.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "flameshot",
"purl": "pkg:deb/debian/flameshot?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"12.1.0+ds-2",
"12.1.0+ds-3",
"12.1.0+ds-4",
"13.3.0+git20251204-1",
"13.3.0+git20251204-1~bpo13+1",
"13.3.0+git20251204-2",
"13.3.0-1",
"13.3.0-1~bpo13+1",
"13.3.0-2",
"14.0.0-1",
"14.0.0-2",
"14.0.0-3",
"14.0.0-4"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62294.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "14.0.0-1"
}
]
}
],
"package": {
"name": "flameshot",
"purl": "pkg:deb/debian/flameshot?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"12.1.0+ds-2",
"12.1.0+ds-3",
"12.1.0+ds-4",
"13.3.0+git20251204-1",
"13.3.0+git20251204-1~bpo13+1",
"13.3.0+git20251204-2",
"13.3.0-1",
"13.3.0-1~bpo13+1",
"13.3.0-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-62294.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-25T09:47:28.720722776Z",
"provider": "osv",
"upstream": [
"CVE-2026-62294"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-62294"
]
},
"related_cves": [
{
"value": "CVE-2026-62294",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 445193,
"published_at": "2026-07-15T15:16:49.01+00:00"
}