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CVE-2026-40505

MuPDF before 1.27 contains an ANSI injection vulnerability in mutool that allows attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata fields. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to terminal output when running mutool info, enabling them to manipulate terminal display for social engineering attacks such as presenting fake prompts or spoofed commands.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ee50381d85a415e24ceda3fd269d2e8c27f3df9f66ce6730f6b9e9bf85cd5ff7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"MuPDF","vendor":"Artifex Software Inc.","versions":[{"lessThan":"1.27.0","status":"affected","version":"0","versionType":"semver"},{"status":"affected","version":"0f17d789fe8c29b41e47663be82514aaca3a4dfb","versionType":"git"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":3.3,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":4.8,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-150","description":"CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"tags":["issue-tracking"],"url":"https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/references/2
{"tags":["patch"],"url":"https://github.com/ArtifexSoftware/mupdf/commit/0f17d789fe8c29b41e47663be82514aaca3a4dfb"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/references/1
{"tags":["release-notes"],"url":"https://github.com/ArtifexSoftware/mupdf/releases/tag/1.27.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/mupdf-mutool-ansi-injection-via-metadata"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a2560cb29b908a809da2e74d80714560b20b08b5c66eccdae25db55ba353ee78 · sha256:845ae6e6529eddbd… · /containers/cna/references/3

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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