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CVE-2026-34084

PhpSpreadsheet is a library for reading and writing spreadsheet files. In versions 1.30.2 and earlier, 2.0.0 through 2.1.14, 2.2.0 through 2.4.3, 3.3.0 through 3.10.3, and 4.0.0 through 5.5.0, when the filename argument to IOFactory::load() is user-controlled, an attacker can supply a PHP stream wrapper path (such as phar://, ftp://, or ssh2.sftp://) that passes the is_file() check in File::assertFile(). The phar:// wrapper triggers deserialization of the PHAR metadata, which can lead to remote
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:77f860e9e1fa87f342d0aabc887542313bf9bfaa95f5544a05f7fd6663875996
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/problemTypes/1/descriptions/0

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"PhpSpreadsheet","vendor":"PHPOffice","versions":[{"status":"affected","version":">= 4.0.0, <= 5.5.0"},{"status":"affected","version":">= 3.3.0, <= 3.10.3"},{"status":"affected","version":">= 2.2.0, <= 2.4.3"},{"status":"affected","version":">= 2.0.0, <= 2.1.14"},{"status":"affected","version":"<= 1.30.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-502","description":"CWE-502: Deserialization of Untrusted Data","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-q4q6-r8wh-5cgh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-q4q6-r8wh-5cgh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-q4q6-r8wh-5cgh"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:758d75ba2337dc6dbb2204e0aff80672c4d6789a0dbed1f53043556e4f38de72 · sha256:210dd5c641ec748d… · /containers/adp/0/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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