CVE-2026-54354

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7%, top 50% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

MapServer is a system for developing web-based GIS applications. Prior to 8.6.4, MapServer's PostGIS runtime filter translation in src/mappostgis.cpp and msPostGISLayerTranslateFilter() treats a filteritem as numeric when CONNECTIONTYPE POSTGIS and metadata such as gml__type=Integer are configured, but it does not verify that attacker-controlled CGI qstring or OGC API Features featureId input is a numeric literal. The unquoted input is concatenated into the generated PostgreSQL/PostGIS predicate, allowing an unauthenticated remote attacker with access to an affected query endpoint to bypass predicates, enumerate unintended records, perform boolean-based or time-based SQL injection, and increase database load. The issue does not by itself establish database modification capabilities. This issue is fixed in version 8.6.4.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

September 17, 2026

Last Modified

September 24, 2026

Advisory Details (6)

Auto-updated Sep 17, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github, github_pr, github_commit.
generic

MapServer 8.6 Changelog — MapServer 8.6.6 documentation

https://mapserver.org/development/changelog/changelog-8-6.html#changelog-8-6
github_release Patch Available

MapServer 8.6.4

Patch available: MapServer/MapServer rel-8-6-4

https://github.com/MapServer/MapServer/releases/tag/rel-8-6-4
github_commit

commit bd59d49779d2 (MapServer/MapServer)

Fix landed in MapServer/MapServer commit bd59d49779d2 — awaiting tagged release

https://github.com/MapServer/MapServer/commit/bd59d49779d2ecc64ca8dc1281c53231a50b698e
github_commit Patch Available

commit 65f1b53c258d (MapServer/MapServer)

Patch available: MapServer/MapServer rel-8-6-4 (contains commit 65f1b53c258d)

https://github.com/MapServer/MapServer/commit/65f1b53c258df2abdf6ce1f437c29e75e9976247
github_pr

PostGIS: make sure identifier value is numeric when the declared type is numeric too

Fix merged in MapServer/MapServer PR #7516 on 2026-05-31 — awaiting tagged release

https://github.com/MapServer/MapServer/pull/7516
github Patch Available🟡 PoC Available

MapServer 8.6.3: PostGIS Numeric Filter Value SQL Injection in MapServer Runtime Query Translation · Advisory · MapServer/MapServer · GitHub

https://github.com/MapServer/MapServer/security/advisories/GHSA-xp29-8wp5-wc3p

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 21:24 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 23:09 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 21:36 UTCEG score recompute
  6. 2026-09-22 08:51 UTCEG score recompute
  7. 2026-09-21 07:17 UTCEG score recompute
  8. 2026-09-20 20:16 UTCEPSS rescore
  9. 2026-09-19 16:58 UTCEG score recompute
  10. 2026-09-19 04:11 UTCEG score recompute
  11. 2026-09-18 19:28 UTCEPSS rescore
  12. 2026-09-18 15:26 UTCEG score recompute
  13. 2026-09-18 14:54 UTCEG score recompute
  14. 2026-09-17 21:20 UTCEG score recompute
  15. 2026-09-17 20:34 UTCEG score recompute
  16. 2026-09-17 20:34 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-54354?
CVE-2026-54354 is a high vulnerability published on September 17, 2026. MapServer is a system for developing web-based GIS applications. Prior to 8.6.4, MapServer's PostGIS runtime filter translation in src/mappostgis.cpp and msPostGISLayerTranslateFilter() treats a filteritem as numeric when CONNECTIONTYPE POSTGIS and metadata such as gml<item>type=Integer are…
When was CVE-2026-54354 disclosed?
CVE-2026-54354 was first published in the National Vulnerability Database on September 17, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54354 actively exploited?
CVE-2026-54354 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 49.5% of all scored CVEs.
What is the CVSS score of CVE-2026-54354?
CVE-2026-54354 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-54354?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54354, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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