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01 Record

CVE-2023-31194

An improper array index validation vulnerability exists in the GraphPlanar::Write functionality of Diagon v1.0.139. A specially crafted markdown file can lead to memory corruption. A victim would need

MediumPUBLISHEDCNA: talos
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

02 Description

An improper array index validation vulnerability exists in the GraphPlanar::Write functionality of Diagon v1.0.139. A specially crafted markdown file can lead to memory corruption. A victim would need

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.44% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 38.4% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-07-05 15:51Z3 YR AGO
Last updated
2025-11-04 19:15Z11 MO AGO
Reserved
2023-04-26
Assigning CNA
talos
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weaknesses
  • CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
  • CWE-129Improper Validation of Array IndexVariant
Data version
5.2
Document digest
984065bcbea426ef29edebd8a101b8667bd687c01411e183fd34b51c6591ded4

05 Affected products

VendorProductVersionsPlatforms
DiagonDiagonv1.0.139—

06 References