Vulnerability-Lookup

CVE-2026-1837 (GCVE-0-2026-1837)

Vulnerability from cvelistv5 – Published: 2026-02-11 15:19 – Updated: 2026-07-15 01:21

Title

libjxl: Out-of-bounds write in grayscale color transformation when using LCMS2

Summary

A specially-crafted file can cause libjxl's decoder to write pixel data to uninitialized unallocated memory. Soon after that data from another uninitialized unallocated region is copied to pixel data. This can be done by requesting color transformation of grayscale images to another grayscale color space. Buffers allocated for 1-float-per-pixel are used as if they are allocated for 3-float-per-pixel. That happens only if LCMS2 is used as CMS engine. There is another CMS engine available (selected by build flags).

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-13 04:56 UTC

CWE

CWE-805
CWE-787 - Out-of-bounds Write

Assigner

Google Google root

References

4 references

URL	Tags
https://github.com/libjxl/libjxl/issues/4549
https://access.redhat.com/security/cve/CVE-2026-1837	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2438974	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

5 products

Vendor	Product	Version	CPE status
Google	libjxl	Affected: 0.9 , ≤ 0.11.1 (semver)	guessed
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

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}

NCSC-2026-0139

Vulnerability from csaf_ncscnl - Published: 2026-05-12 12:19 - Updated: 2026-05-12 12:19

Summary

Kwetsbaarheden verholpen in Apple MacOS

Scope

82 vulnerabilities in this advisory, including CVE-2026-1837.

CVE-2026-1837

Multiple vulnerabilities in libjxl and open source code affecting Apple Software allow specially crafted image files to cause uninitialized memory read/write and denial-of-service conditions.

8.8 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Known affected: 4 products

Open the full advisory

OPENSUSE-SU-2026:10271-1

Vulnerability from csaf_opensuse - Published: 2026-02-27 00:00 - Updated: 2026-09-17 16:55

Summary

libjxl-devel-0.11.2-1.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-1837.

CVE-2026-1837

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 20 products

Open the full advisory

OPENSUSE-SU-2026:20385-1

Vulnerability from csaf_opensuse - Published: 2026-03-18 10:13 - Updated: 2026-09-17 17:28

Summary

Security update for libjxl

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-1837.

CVE-2026-1837

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 13 products

Open the full advisory

SUSE-SU-2026:0648-1

Vulnerability from csaf_suse - Published: 2026-02-25 16:30 - Updated: 2026-09-16 19:06

Summary

Security update for libjxl

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-1837.

CVE-2026-1837

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 13 products

Open the full advisory

SUSE-SU-2026:20903-1

Vulnerability from csaf_suse - Published: 2026-03-18 10:12 - Updated: 2026-09-16 19:37

Summary

Security update for libjxl

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2026-1837.

CVE-2026-1837

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Recommended: 18 products

Open the full advisory

UBUNTU-CVE-2026-1837 (CVE-2026-1837)

Vulnerability from osv_ubuntu – Published: 2026-02-11 16:16 – Updated: 2026-06-30 16:18 – Source website

Details

Severity

8.7 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-1837	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-1837	REPORT
	https://ubuntu.com/security/notices/USN-8146-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libjpegxl-java",
            "binary_version": "0.11.1-6ubuntu1.1"
          },
          {
            "binary_name": "libjxl-devtools",
            "binary_version": "0.11.1-6ubuntu1.1"
          },
          {
            "binary_name": "libjxl-gdk-pixbuf",
            "binary_version": "0.11.1-6ubuntu1.1"
          },
          {
            "binary_name": "libjxl-tools",
            "binary_version": "0.11.1-6ubuntu1.1"
          },
          {
            "binary_name": "libjxl0.11",
            "binary_version": "0.11.1-6ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "jpeg-xl",
        "purl": "pkg:deb/ubuntu/jpeg-xl@0.11.1-6ubuntu1.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.11.1-6ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.1-4",
        "0.11.1-6ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "A specially-crafted file can cause libjxl\u0027s decoder to write pixel data to uninitialized unallocated memory. Soon after that data from another uninitialized unallocated region is copied to pixel data. This can be done by requesting color transformation of grayscale images to another grayscale color space. Buffers allocated for 1-float-per-pixel are used as if they are allocated for 3-float-per-pixel. That happens only if LCMS2 is used as CMS engine. There is another CMS engine available (selected by build flags).",
  "id": "UBUNTU-CVE-2026-1837",
  "modified": "2026-06-30T16:18:32Z",
  "published": "2026-02-11T16:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-1837"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-1837"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8146-1"
    }
  ],
  "related": [
    "USN-8146-1"
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  "schema_version": "1.7.0",
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      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
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}

WID-SEC-W-2026-1459

Vulnerability from csaf_certbund - Published: 2026-05-11 22:00 - Updated: 2026-05-12 22:00

Summary

Apple iOS und iPadOS: Mehrere Schwachstellen

Severity

Hoch

Scope

72 vulnerabilities in this advisory, including CVE-2026-1837.

CVE-2026-1837

Known affected: 4 products

Open the full advisory

WID-SEC-W-2026-1463

Vulnerability from csaf_certbund - Published: 2026-05-11 22:00 - Updated: 2026-05-12 22:00

Summary

Apple macOS Sonoma, macOS Sequoia und macOS Tahoe: Mehrere Schwachstellen

Severity

Hoch

Scope

82 vulnerabilities in this advisory, including CVE-2026-1837.

CVE-2026-1837

Known affected: 3 products

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

Action not permitted

CVE-2026-1837 (GCVE-0-2026-1837)

NCSC-2026-0139

OPENSUSE-SU-2026:10271-1

OPENSUSE-SU-2026:20385-1

SUSE-SU-2026:0648-1

SUSE-SU-2026:20903-1

UBUNTU-CVE-2026-1837 (CVE-2026-1837)

WID-SEC-W-2026-1459

WID-SEC-W-2026-1463

Tags

Sightings

Nomenclature

Related by attack behaviour