CVE-2026-40505 (GCVE-0-2026-40505)

Vulnerability from cvelistv5 – Published: 2026-04-16 01:20 – Updated: 2026-04-16 01:21
VLAI?
Title
MuPDF mutool ANSI Injection via Metadata
Summary
MuPDF mutool does not sanitize PDF metadata fields before writing them to terminal output, allowing attackers to inject arbitrary ANSI escape sequences through crafted PDF metadata. Attackers can embed malicious ANSI escape codes in PDF metadata that are passed unsanitized to the terminal when running mutool info, enabling them to clear the terminal display and render arbitrary text for social engineering attacks such as presenting fake prompts or spoofed commands.
Severity ?
4.8 (Medium)
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
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE
  • CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
Impacted products
Vendor Product Version
Artifex Software Inc. MuPDF Affected: 0 , < 0f17d789fe8c29b41e47663be82514aaca3a4dfb (git)
Create a notification for this product.
Credits
Niel Duysters
Show details on NVD website
To clipboard 

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          "versions": [
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      "credits": [
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          "type": "finder",
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          "supportingMedia": [
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              "type": "text/html",
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            }
          ],
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        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "subAvailabilityImpact": "NONE",
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            "subIntegrityImpact": "NONE",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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          "url": "https://cgit.ghostscript.com/cgi-bin/cgit.cgi/mupdf.git/commit/?id=0f17d789fe8c29b41e47663be82514aaca3a4dfb"
        },
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      "source": {
        "discovery": "EXTERNAL"
      },
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    "datePublished": "2026-04-16T01:20:08.397Z",
    "dateReserved": "2026-04-13T20:29:02.808Z",
    "dateUpdated": "2026-04-16T01:21:45.703Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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