CVE Explorer

CVE-2026-42346

Postiz is an AI social media scheduling tool. From version 2.16.6 to before version 2.21.7, all SSRF protections added in v2.21.4–v2.21.6 share a fundamental TOCTOU (Time-of-Check-Time-of-Use) vulnerability: isSafePublicHttpsUrl() resolves DNS to validate the target IP, but subsequent fetch() calls resolve DNS independently. An attacker controlling a DNS server can exploit this gap via DNS rebinding to redirect requests to internal network addresses. This issue has been patched in version 2.21.7

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:2dd571445cd46f76087b20da998646c25c7c100890b17ef0ea276b4c553bf530

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"postiz-app","vendor":"gitroomhq","versions":[{"status":"affected","version":">= 2.16.6, < 2.21.7"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:4d945ad2e2fb79f5b644d3891d254056b4af7d5520aafddc290b47039c18cea5 · sha256:bbbfbbee45a84d60… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:4d945ad2e2fb79f5b644d3891d254056b4af7d5520aafddc290b47039c18cea5 · sha256:bbbfbbee45a84d60… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:4d945ad2e2fb79f5b644d3891d254056b4af7d5520aafddc290b47039c18cea5 · sha256:bbbfbbee45a84d60… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/gitroomhq/postiz-app/commit/071143dcb01cdeb9d5d7019892f4c6ff7b19dbeb","tags":["x_refsource_MISC"],"url":"https://github.com/gitroomhq/postiz-app/commit/071143dcb01cdeb9d5d7019892f4c6ff7b19dbeb"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4d945ad2e2fb79f5b644d3891d254056b4af7d5520aafddc290b47039c18cea5 · sha256:bbbfbbee45a84d60… · /containers/cna/references/1

{"name":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.7","tags":["x_refsource_MISC"],"url":"https://github.com/gitroomhq/postiz-app/releases/tag/v2.21.7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4d945ad2e2fb79f5b644d3891d254056b4af7d5520aafddc290b47039c18cea5 · sha256:bbbfbbee45a84d60… · /containers/cna/references/2

{"name":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-f7jj-p389-4w45","tags":["x_refsource_CONFIRM"],"url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-f7jj-p389-4w45"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:4d945ad2e2fb79f5b644d3891d254056b4af7d5520aafddc290b47039c18cea5 · sha256:bbbfbbee45a84d60… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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