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CVE-2026-59932

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the Gnumeric reader reads attacker-supplied .gnumeric files into memory and, when the file starts with gzip magic bytes, calls gzdecode() on the full compressed contents without enforcing a decompressed-size limit. A very small compressed .gnumeric file can expand to data larg
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bff742921b651e6837aa80d6034f5bc87184bf5f321603f454d216a0cbc21039
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-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"PhpSpreadsheet","vendor":"PHPOffice","versions":[{"status":"affected","version":">= 4.0.0, < 5.8.1"},{"status":"affected","version":">= 3.3.0, < 3.10.7"},{"status":"affected","version":">= 2.2.0, < 2.4.7"},{"status":"affected","version":">= 2.0.0, < 2.1.18"},{"status":"affected","version":"< 1.30.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/problemTypes/1/descriptions/0

Source references

8 source assertions
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/commit/85f2556b0bf5269061bf45932ecda8a128d81750","tags":["x_refsource_MISC"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/commit/85f2556b0bf5269061bf45932ecda8a128d81750"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/references/1
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.6","tags":["x_refsource_MISC"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.30.6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/references/2
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.18","tags":["x_refsource_MISC"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.1.18"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/references/3
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.7","tags":["x_refsource_MISC"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/2.4.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/references/4
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.7","tags":["x_refsource_MISC"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/3.10.7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/references/5
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.8.1","tags":["x_refsource_MISC"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/5.8.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/cna/references/6
{"tags":["exploit"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2mrg-gjxq-2gvr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /containers/adp/0/references/0
{"name":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2mrg-gjxq-2gvr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-2mrg-gjxq-2gvr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46edb58949ff259c2e6eda30f5f262b5f9f21f683b1a8dbb3b7eb7377f7baf65 · sha256:497543d21fdc5ff5… · /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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