{"id":"CVE-2026-62294","state":"PUBLISHED","title":"Flameshot: OCTOU symlink attack via predictable /tmp path in Flameshot \"Open With\"","description":"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.","publishedAt":"2026-07-15T14:20:43.746Z","updatedAt":"2026-07-15T18:00:42.038Z","severity":{"score":5.1,"label":"Medium","version":"4.0","vector":"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","source":"GitHub_M"},"assigner":"GitHub_M","products":["flameshot-org flameshot"],"affected":[{"vendor":"flameshot-org","product":"flameshot","versions":[{"version":"< 14.0.0","status":"affected"}]}],"references":["https://github.com/flameshot-org/flameshot/security/advisories/GHSA-fqqf-4rj8-c392","https://github.com/flameshot-org/flameshot/pull/4716","https://github.com/flameshot-org/flameshot/commit/936716b8d8b7052be461c3d5e2f88492b6eb3b96","https://github.com/flameshot-org/flameshot/releases/tag/v14.0.0"],"weaknesses":["CWE-362","CWE-377"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/62xxx/CVE-2026-62294.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-62294","state":"PUBLISHED","datePublished":"2026-07-15T14:20:43.746Z","dateUpdated":"2026-07-15T18:00:42.038Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-13T18:37:08.488Z"},"containers":{"cna":{"title":"Flameshot: OCTOU symlink attack via predictable /tmp path in Flameshot \"Open With\"","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"flameshot-org","product":"flameshot","versions":[{"version":"< 14.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/flameshot-org/flameshot/security/advisories/GHSA-fqqf-4rj8-c392","name":"https://github.com/flameshot-org/flameshot/security/advisories/GHSA-fqqf-4rj8-c392","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/flameshot-org/flameshot/pull/4716","name":"https://github.com/flameshot-org/flameshot/pull/4716","tags":["x_refsource_MISC"]},{"url":"https://github.com/flameshot-org/flameshot/commit/936716b8d8b7052be461c3d5e2f88492b6eb3b96","name":"https://github.com/flameshot-org/flameshot/commit/936716b8d8b7052be461c3d5e2f88492b6eb3b96","tags":["x_refsource_MISC"]},{"url":"https://github.com/flameshot-org/flameshot/releases/tag/v14.0.0","name":"https://github.com/flameshot-org/flameshot/releases/tag/v14.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-377","lang":"en","description":"CWE-377: Insecure Temporary File","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-15T14:20:43.746Z"},"source":{"advisory":"GHSA-fqqf-4rj8-c392","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T17:59:53.344366Z","id":"CVE-2026-62294","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-15T18:00:42.038Z"}}]}}}