Vulnerability-Lookup

OPENSUSE-SU-2026:10900-1

Vulnerability from csaf_opensuse - Published: 2026-05-29 00:00 - Updated: 2026-09-17 17:07

Summary

python311-dulwich-1.2.5-1.1 on GA media

Severity

Moderate

Notes

Title of the patch: python311-dulwich-1.2.5-1.1 on GA media

Description of the patch: These are all security issues fixed in the python311-dulwich-1.2.5-1.1 package on the GA media of openSUSE Tumbleweed.

Patchnames: openSUSE-Tumbleweed-2026-10900

CVE-2026-42305

6.9 (Medium)


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

Affected products

Recommended 12 products

Product	Version	Remediation
Unresolved product id: openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2026-42563

7 (High)


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

Affected products

Recommended 12 products, the same list as for CVE-2026-42305

Threats

Impact important

CVE-2026-47712

3.3 (Low)


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

Affected products

Recommended 12 products, the same list as for CVE-2026-42305

Threats

Impact low

References

11 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://www.suse.com/security/cve/CVE-2026-42305/	self
https://www.suse.com/security/cve/CVE-2026-42563/	self
https://www.suse.com/security/cve/CVE-2026-47712/	self
https://www.suse.com/security/cve/CVE-2026-42305	external
https://bugzilla.suse.com/1268128	external
https://www.suse.com/security/cve/CVE-2026-42563	external
https://bugzilla.suse.com/1268129	external
https://www.suse.com/security/cve/CVE-2026-47712	external
https://bugzilla.suse.com/1268137	external

JSON

To clipboard

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  "vulnerabilities": [
    {
      "cve": "CVE-2026-42305",
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-42305"
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      "notes": [
        {
          "category": "general",
          "text": "Dulwich is a pure-Python implementation of the Git file formats and protocols. Versions starting with 0.10.0 and prior to 1.2.5 have an arbitrary file write leading to remote code execution when cloning or checking out a malicious Git repository on Windows. Dulwich\u0027s path-element validator accepted tree entries whose filenames contained bytes that Windows interprets as structural path syntax. Contributing configuration bugs made matters worse. The core.protectNTFS and core.protectHFS settings were looked up under a wrong option name and so user-set values were silently ignored, and core.protectNTFS only defaulted to true on Windows (Git upstream has defaulted it to true everywhere since CVE-2019-1353). Both have been corrected. Anyone who clones, fetches, or checks out an untrusted repository with Dulwich on Windows - either through the Dulwich CLI, porcelain.clone, or any downstream tool built on Dulwich - is impacted. POSIX clones are not directly exploitable (on POSIX \\ is a literal filename byte), but a POSIX user can unknowingly propagate a malicious tree to Windows consumers via push or re-publication. This issue is fixed in Dulwich 1.2.5. Users should upgrade to 1.2.5 or later. There is no effective pre-patch workaround. On affected versions the core.protectNTFS configuration key was silently ignored, so setting it to true does not mitigate the issue. Users who cannot upgrade should avoid cloning, fetching, or checking out untrusted repositories with Dulwich on Windows. After upgrading the NTFS validator is on by default on every platform, so no additional configuration is required.",
          "title": "CVE description"
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            "openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.ppc64le",
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            "openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.x86_64",
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            "openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N",
            "version": "3.1"
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          "date": "2026-05-29T00:00:00Z",
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      ],
      "title": "CVE-2026-42305"
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    {
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          "text": "https://www.suse.com/security/cve/CVE-2026-42563"
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        {
          "category": "general",
          "text": "Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, Dulwich\u0027s `ProcessMergeDriver` substitutes the file path (from the git tree, controllable by an attacker via a malicious branch) into the merge driver command via the `%P` placeholder and executes it with `subprocess.run(..., shell=True)`. An attacker who can cause a victim to merge an untrusted branch can achieve arbitrary command execution by crafting malicious file paths. Version 1.2.5 fixes the issue.",
          "title": "CVE description"
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        {
          "category": "external",
          "summary": "CVE-2026-42563",
          "url": "https://www.suse.com/security/cve/CVE-2026-42563"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1268129 for CVE-2026-42563",
          "url": "https://bugzilla.suse.com/1268129"
        }
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      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.aarch64",
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            "openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.aarch64",
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            "openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.s390x",
            "openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.x86_64",
            "openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.aarch64",
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        {
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          "text": "https://www.suse.com/security/cve/CVE-2026-47712"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, dulwich.porcelain.format_patch(outdir=...) derives each patch filename from the commit\u0027s subject line. Prior to this fix, get_summary only replaced spaces with dashes - path separators (/, \\), parent-directory components (..), and other filename-hostile characters (e.g. :) were preserved verbatim and passed straight into os.path.join(outdir, f\"{i:04d}-{summary}.patch\"). A malicious commit subject could therefore direct the generated patch file outside the requested outdir. This is fixed in Dulwich 1.2.5. Users should upgrade to 1.2.5 or later. dulwich.patch.get_summary now mirrors git\u0027s format_sanitized_subject: only `[A-Za-z0-9._]` are kept, runs of other characters collapse to a single -, consecutive . collapse to a single ., trailing ./- are stripped, and the result is length-limited. This makes the returned string safe to embed as a filename component, so format_patch can no longer be steered out of outdir via the commit subject. Until upgrading, callers that pass untrusted commits to   porcelain.format_patch can use stdout=True and write the patch to a destination they control, rather than letting format_patch choose the filename; validate the chosen path before opening - e.g. compare os.path.realpath(returned_path) against  os.path.realpath(outdir) and reject any patch whose resolved path is not inside outdir; and/or pre-screen commits and refuse to format any whose subject\u0027s first line contains /, \\, .., or other characters that are not safe on the target filesystem.",
          "title": "CVE description"
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        ]
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        }
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "openSUSE Tumbleweed:python311-dulwich-0:1.2.5-1.1.aarch64",
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            "openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.aarch64",
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            "openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.s390x",
            "openSUSE Tumbleweed:python313-dulwich-0:1.2.5-1.1.x86_64",
            "openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.aarch64",
            "openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.ppc64le",
            "openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.s390x",
            "openSUSE Tumbleweed:python314-dulwich-0:1.2.5-1.1.x86_64"
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          "category": "impact",
          "date": "2026-05-29T00:00:00Z",
          "details": "low"
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      ],
      "title": "CVE-2026-47712"
    }
  ]
}

CVE-2026-42305 (GCVE-0-2026-42305)

Vulnerability from cvelistv5 – Published: 2026-06-10 21:55 – Updated: 2026-06-12 03:55

Title

Dulwich has an arbitrary file write via NTFS-hostile tree entries on Windows

Summary

Dulwich is a pure-Python implementation of the Git file formats and protocols. Versions starting with 0.10.0 and prior to 1.2.5 have an arbitrary file write leading to remote code execution when cloning or checking out a malicious Git repository on Windows. Dulwich's path-element validator accepted tree entries whose filenames contained bytes that Windows interprets as structural path syntax. Contributing configuration bugs made matters worse. The core.protectNTFS and core.protectHFS settings were looked up under a wrong option name and so user-set values were silently ignored, and core.protectNTFS only defaulted to true on Windows (Git upstream has defaulted it to true everywhere since CVE-2019-1353). Both have been corrected. Anyone who clones, fetches, or checks out an untrusted repository with Dulwich on Windows - either through the Dulwich CLI, porcelain.clone, or any downstream tool built on Dulwich - is impacted. POSIX clones are not directly exploitable (on POSIX \ is a literal filename byte), but a POSIX user can unknowingly propagate a malicious tree to Windows consumers via push or re-publication. This issue is fixed in Dulwich 1.2.5. Users should upgrade to 1.2.5 or later. There is no effective pre-patch workaround. On affected versions the core.protectNTFS configuration key was silently ignored, so setting it to true does not mitigate the issue. Users who cannot upgrade should avoid cloning, fetching, or checking out untrusted repositories with Dulwich on Windows. After upgrading the NTFS validator is on by default on every platform, so no additional configuration is required.

Severity

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 2026-06-11 00:00 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/jelmer/dulwich/security/adviso…	x_refsource_CONFIRM
https://github.com/jelmer/dulwich/commit/49eb56e5…	x_refsource_MISC
https://github.com/jelmer/dulwich/commit/57efc4aa…	x_refsource_MISC
https://github.com/jelmer/dulwich/releases/tag/du…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
jelmer	dulwich	Affected: >= 0.10.0, < 1.2.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42305",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2026-06-11T00:00:00+00:00",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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      "affected": [
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          "vendor": "jelmer",
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            "attackVector": "NETWORK",
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
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            "version": "3.1"
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          "descriptions": [
            {
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              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
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      "providerMetadata": {
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          "name": "https://github.com/jelmer/dulwich/security/advisories/GHSA-897w-fcg9-f6xj",
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          "tags": [
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      "title": "Dulwich has an arbitrary file write via NTFS-hostile tree entries on Windows"
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  "cveMetadata": {
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42305",
    "datePublished": "2026-06-10T21:55:30.942Z",
    "dateReserved": "2026-04-26T12:13:55.553Z",
    "dateUpdated": "2026-06-12T03:55:29.808Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-42563 (GCVE-0-2026-42563)

Vulnerability from cvelistv5 – Published: 2026-06-10 21:47 – Updated: 2026-06-12 03:55

Title

Dulwich Vulnerable to Command Injection via Merge Driver Path

Summary

Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, Dulwich's `ProcessMergeDriver` substitutes the file path (from the git tree, controllable by an attacker via a malicious branch) into the merge driver command via the `%P` placeholder and executes it with `subprocess.run(..., shell=True)`. An attacker who can cause a victim to merge an untrusted branch can achieve arbitrary command execution by crafting malicious file paths. Version 1.2.5 fixes the issue.

Severity

7.7 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-11 00:00 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/jelmer/dulwich/security/adviso…	x_refsource_CONFIRM
https://github.com/jelmer/dulwich/commit/e3331b3b…	x_refsource_MISC
https://github.com/jelmer/dulwich/releases/tag/du…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
jelmer	dulwich	Affected: >= 0.24.0, < 1.2.5

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
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        "metrics": [
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              "content": {
                "id": "CVE-2026-42563",
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          "name": "https://github.com/jelmer/dulwich/security/advisories/GHSA-9277-mp7x-85jf",
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          "name": "https://github.com/jelmer/dulwich/commit/e3331b3b3a122fc313460182f928f59723580b7b",
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        "advisory": "GHSA-9277-mp7x-85jf",
        "discovery": "UNKNOWN"
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      "title": "Dulwich Vulnerable to Command Injection via Merge Driver Path"
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CVE-2026-47712 (GCVE-0-2026-47712)

Vulnerability from cvelistv5 – Published: 2026-06-10 22:01 – Updated: 2026-06-11 12:42

Title

Dulwich doesn't sanitize commit subjects in `porcelain.format_patch`

Summary

Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, dulwich.porcelain.format_patch(outdir=...) derives each patch filename from the commit's subject line. Prior to this fix, get_summary only replaced spaces with dashes - path separators (/, \), parent-directory components (..), and other filename-hostile characters (e.g. :) were preserved verbatim and passed straight into os.path.join(outdir, f"{i:04d}-{summary}.patch"). A malicious commit subject could therefore direct the generated patch file outside the requested outdir. This is fixed in Dulwich 1.2.5. Users should upgrade to 1.2.5 or later. dulwich.patch.get_summary now mirrors git's format_sanitized_subject: only `[A-Za-z0-9._]` are kept, runs of other characters collapse to a single -, consecutive . collapse to a single ., trailing ./- are stripped, and the result is length-limited. This makes the returned string safe to embed as a filename component, so format_patch can no longer be steered out of outdir via the commit subject. Until upgrading, callers that pass untrusted commits to porcelain.format_patch can use stdout=True and write the patch to a destination they control, rather than letting format_patch choose the filename; validate the chosen path before opening - e.g. compare os.path.realpath(returned_path) against os.path.realpath(outdir) and reject any patch whose resolved path is not inside outdir; and/or pre-screen commits and refuse to format any whose subject's first line contains /, \, .., or other characters that are not safe on the target filesystem.

Severity

3.3 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-11 12:41 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/jelmer/dulwich/security/adviso…	x_refsource_CONFIRM
https://github.com/jelmer/dulwich/commit/c2446e51b	x_refsource_MISC
https://github.com/jelmer/dulwich/releases/tag/du…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
jelmer	dulwich	Affected: >= 0.24.0, < 1.2.5

Show details on NVD website

JSON

To clipboard

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    "adp": [
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          {
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        }
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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

OPENSUSE-SU-2026:10900-1

CVE-2026-42305 (GCVE-0-2026-42305)

CVE-2026-42563 (GCVE-0-2026-42563)

CVE-2026-47712 (GCVE-0-2026-47712)

Tags

Sightings

Nomenclature

Related by attack behaviour