CVE Explorer

CVE-2026-26978

FreePBX is an open source IP PBX. In versions below 16.0.71 and 17.0.6, the backup module does not properly sanitize data during restore operations, potentially leading to compromise if the backup contains carefully crafted hostile data. During backup restore operations, FreePBX extracts selected files from a user-supplied tar archive. If a malicious file exists in the archive, it is read and passed directly to unserialize() without validation, class restrictions, or integrity checks. This issue

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:10249c6a161751cc17fc28747b02a3c2806f3d7bcb0f5e21ee8e05186081de1e

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"security-reporting","vendor":"FreePBX","versions":[{"status":"affected","version":"< 16.0.71"},{"status":"affected","version":">= 17.0.0, < 17.0.6"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:5637e6b54b63f763ff1e8e60c20949e3adca8a5ac1ae2bc5884a93c40103436f · sha256:81c93ae4db07bb7b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.6,"baseSeverity":"HIGH","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:5637e6b54b63f763ff1e8e60c20949e3adca8a5ac1ae2bc5884a93c40103436f · sha256:81c93ae4db07bb7b… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:5637e6b54b63f763ff1e8e60c20949e3adca8a5ac1ae2bc5884a93c40103436f · sha256:81c93ae4db07bb7b… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/FreePBX/backup/commit/45c57e1207cbf9fd1c5f76f8a3e72d204a69a472","tags":["x_refsource_MISC"],"url":"https://github.com/FreePBX/backup/commit/45c57e1207cbf9fd1c5f76f8a3e72d204a69a472"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5637e6b54b63f763ff1e8e60c20949e3adca8a5ac1ae2bc5884a93c40103436f · sha256:81c93ae4db07bb7b… · /containers/cna/references/1

{"name":"https://github.com/FreePBX/backup/commit/64781af5c80cce0cff21a981be4d8e6a7a71f2c4","tags":["x_refsource_MISC"],"url":"https://github.com/FreePBX/backup/commit/64781af5c80cce0cff21a981be4d8e6a7a71f2c4"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5637e6b54b63f763ff1e8e60c20949e3adca8a5ac1ae2bc5884a93c40103436f · sha256:81c93ae4db07bb7b… · /containers/cna/references/2

{"name":"https://github.com/FreePBX/security-reporting/security/advisories/GHSA-5v7h-49gr-jcwr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FreePBX/security-reporting/security/advisories/GHSA-5v7h-49gr-jcwr"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:5637e6b54b63f763ff1e8e60c20949e3adca8a5ac1ae2bc5884a93c40103436f · sha256:81c93ae4db07bb7b… · /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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