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CVE-2026-93312 (GCVE-0-2026-93312)

Vulnerability from cvelistv5 – Published: 2026-09-18 00:45 – Updated: 2026-09-18 00:45 X_Open Source
VLAI
Title
Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereference
Summary
A flaw has been found in Freedesktop Poppler 26.07.0. Impacted is the function JBIG2Stream::rewind of the file poppler/JBIG2Stream.cc. This manipulation causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. Upgrading to version 26.08.0 is recommended to address this issue. Patch name: 5e49250f13b0390edeb3f90eb4c02c9941f97067. Upgrading the affected component is advised.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
4.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Freedesktop Poppler Affected: 26.07.0
Unaffected: 26.08.0
    cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
r1ck99 (VulDB User)
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:freedesktop:poppler:*:*:*:*:*:*:*:*"
          ],
          "product": "Poppler",
          "vendor": "Freedesktop",
          "versions": [
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              "version": "26.07.0"
            },
            {
              "status": "unaffected",
              "version": "26.08.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "r1ck99 (VulDB User)"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "A flaw has been found in Freedesktop Poppler 26.07.0. Impacted is the function JBIG2Stream::rewind of the file poppler/JBIG2Stream.cc. This manipulation causes null pointer dereference. It is possible to initiate the attack remotely. The exploit has been published and may be used. Upgrading to version 26.08.0 is recommended to address this issue. Patch name: 5e49250f13b0390edeb3f90eb4c02c9941f97067. Upgrading the affected component is advised."
        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
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          "url": "https://gitlab.freedesktop.org/poppler/poppler/-/work_items/1759"
        },
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        },
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          "url": "https://github.com/r1ck9-2q/cve_summit/blob/main/Null-pointer-offset-undefined-behavior-in-JBIG2Stream-rewind-JBIG2Stream.cc-1229.md"
        },
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          "value": "VulDB entry last update"
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      "title": "Freedesktop Poppler JBIG2Stream.cc rewind null pointer dereference",
      "x_generator": [
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    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-93312",
    "datePublished": "2026-09-18T00:45:12.489Z",
    "dateReserved": "2026-09-17T17:13:08.412Z",
    "dateUpdated": "2026-09-18T00:45:12.489Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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          }
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        "lastModified": "2026-09-18T13:23:37.403",
        "metrics": {
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                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
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  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.