Vulnerability-Lookup

OPENSUSE-SU-2026:20857-1

Vulnerability from csaf_opensuse - Published: 2026-06-01 16:05 - Updated: 2026-09-17 17:33

Summary

Security update for mapserver

Severity

Important

Notes

Title of the patch: Security update for mapserver

Description of the patch: This update for mapserver fixes the following issues: Changes in mapserver: - Update to releasee 8.6.3 * SLD parser: fix out of bounds access on SLD with only a Rule with a ElseFilter but without a symbolizer [CVE-2026-33721, boo#1260869] [CVE-2026-45104, boo#1266663]

Patchnames: openSUSE-Leap-16.0-packagehub-287

CVE-2026-33721

7.5 (High)


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

Affected products

Recommended 21 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:libjavamapscript-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libjavamapscript-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libjavamapscript-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libmapserver2-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libmapserver2-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:libmapserver2-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mapserver-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mapserver-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mapserver-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mapserver-devel-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mapserver-devel-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mapserver-devel-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:perl-mapscript-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:perl-mapscript-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:perl-mapscript-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:php-mapscriptng-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:php-mapscriptng-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:php-mapscriptng-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-mapserver-0:8.6.3-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-mapserver-0:8.6.3-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-mapserver-0:8.6.3-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact important

CVE-2026-45104

Affected products

Recommended 21 products, the same list as for CVE-2026-33721

Threats

Impact important

References

10 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1260869	self
https://bugzilla.suse.com/1266663	self
https://www.suse.com/security/cve/CVE-2026-33721/	self
https://www.suse.com/security/cve/CVE-2026-45104/	self
https://www.suse.com/security/cve/CVE-2026-33721	external
https://bugzilla.suse.com/1260869	external
https://www.suse.com/security/cve/CVE-2026-45104	external
https://bugzilla.suse.com/1266663	external

JSON

To clipboard

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CVE-2026-33721 (GCVE-0-2026-33721)

Vulnerability from cvelistv5 – Published: 2026-03-27 00:15 – Updated: 2026-04-17 17:18

Title

MapServer has heap buffer overflow in SLD `Categorize` Threshold parsing

Summary

MapServer is a system for developing web-based GIS applications. Starting in version 4.2 and prior to version 8.6.1, a heap-buffer-overflow write in MapServer’s SLD (Styled Layer Descriptor) parser lets a remote, unauthenticated attacker crash the MapServer process by sending a crafted SLD with more than 100 Threshold elements inside a ColorMap/Categorize structure (commonly reachable via WMS GetMap with SLD_BODY). Version 8.6.1 patches the issue.

Severity

5.3 (Medium)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-30 11:51 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/MapServer/MapServer/security/a…	x_refsource_CONFIRM
https://github.com/MapServer/MapServer/releases/t…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2026…

Impacted products

1 product

Vendor	Product	Version
MapServer	MapServer	Affected: >= 4.2, < 8.6.1

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
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            "url": "https://lists.debian.org/debian-lts-announce/2026/04/msg00017.html"
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        }
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            "attackComplexity": "LOW",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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      "providerMetadata": {
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          "name": "https://github.com/MapServer/MapServer/releases/tag/rel-8-6-1",
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    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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CVE-2026-45104 (GCVE-0-2026-45104)

Vulnerability from cvelistv5 – Published: 2026-05-27 18:41 – Updated: 2026-06-01 17:08

Title

MapServer: NULL pointer dereference in SLD `<ElseFilter>` rule parsing reachable via WMS `SLD_BODY`

Summary

MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls _SLDApplyRuleValues(psRule, psLayer, 1); for any <Rule> carrying <ElseFilter/> — it assumes msSLDParseRule added one class. When the rule has no symbolizer (a structurally valid SLD), msSLDParseRule adds zero, and _SLDApplyRuleValues ends up indexing _class[-1], resulting in a NULL pointer dereference. A 200-byte well-formed SLD via the WMS SLD_BODY= parameter is enough to trigger this, no auth required. This vulnerability is fixed in 8.6.3.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-01 17:05 UTC

CWE

CWE-129 - Improper Validation of Array Index
CWE-476 - NULL Pointer Dereference

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/MapServer/MapServer/security/a…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
MapServer	MapServer	Affected: >= 6.4.0, < 8.6.3

Show details on NVD website

JSON

To clipboard

{
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    "adp": [
      {
        "metrics": [
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                "id": "CVE-2026-45104",
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        }
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            "attackComplexity": "LOW",
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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.

Detection rules are retrieved from Rulezet.

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-2026:20857-1

CVE-2026-33721 (GCVE-0-2026-33721)

CVE-2026-45104 (GCVE-0-2026-45104)

Tags

Sightings

Nomenclature

Related by attack behaviour