How severe is CVE-2023-31794?

CVE-2023-31794 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-31794 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31794?

CVE-2023-31794 affects Artifex Mupdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31794?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-31794 published?

CVE-2023-31794 was published on 2023-10-31 and last updated on 2026-06-17.

CVE-2023-31794

CVE-2023-31794 is a medium-severity vulnerability in Artifex Mupdf with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-674.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-674
Affected product: Artifex Mupdf
Published: 2023-10-31
Last modified: 2026-06-17

Description

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Frequently asked questions

What is CVE-2023-31794?: MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.
How severe is CVE-2023-31794?: CVE-2023-31794 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-31794 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31794?: CVE-2023-31794 affects Artifex Mupdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31794?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-31794 published?: CVE-2023-31794 was published on 2023-10-31 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:artifex:mupdf:1.21.1:*:*:*:*:*:*:*

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Other CWE-674 (Uncontrolled Recursion) vulnerabilities

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CVE-2021-41752 — Critical (CVSS 9.8): Stack overflow vulnerability in Jerryscript before commit e1ce7dd7271288be8c0c8136eea9107df73a8ce2 on Oct 20, 2021 due…
CVE-2018-1000618 — Critical (CVSS 9.8): EOSIO/eos eos version after commit f1545dd0ae2b77580c2236fdb70ae7138d2c7168 contains a stack overflow vulnerability in…
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