CVE-2026-15143

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-10. a secondary CVSS source baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.3Exploit: None knownExposed: 0

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

A flaw was found in the file_type content detector of guardrails-detectors. This vulnerability allows a remote attacker to supply an arbitrary XML Schema Definition (XSD) string, which is processed without proper restrictions. This can lead to server-side requests to arbitrary URLs or local file reads, potentially resulting in sensitive information disclosure, such as cloud provider credentials or access to internal network services.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: 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
Severity93% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
37%
KEV
Not listed

Published

July 10, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
Patch available. Sources: redhat.
redhat

2498165 – (CVE-2026-15143) CVE-2026-15143 guardrails-detectors: guardrails-detectors: SSRF and local file read via user-supplied XML Schema (xml-with-schema:)

https://bugzilla.redhat.com/show_bug.cgi?id=2498165
redhat Patch Available

CVE-2026-15143 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-15143

Vendor Advisories for CVE-2026-15143(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 88× 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.

Showing the most recent 100 of 365 total refreshes for this CVE.

  1. 2026-09-18 19:27 UTCEPSS rescore
  2. 2026-09-18 10:08 UTCGHSA enrichment
  3. 2026-09-18 05:19 UTCEG score recompute
  4. 2026-09-18 05:19 UTCGHSA enrichment
  5. 2026-09-16 14:07 UTCEPSS rescore
  6. 2026-09-16 05:14 UTCEPSS rescore
  7. 2026-09-14 11:10 UTCGHSA enrichment
  8. 2026-09-14 07:13 UTCGHSA enrichment
  9. 2026-09-14 03:26 UTCGHSA enrichment
  10. 2026-09-13 23:41 UTCEG score recompute
  11. 2026-09-13 23:41 UTCGHSA enrichment
  12. 2026-09-13 16:46 UTCEPSS rescore
  13. 2026-09-13 16:42 UTCGHSA enrichment
  14. 2026-09-13 11:59 UTCGHSA enrichment
  15. 2026-09-13 08:13 UTCEG score recompute
  16. 2026-09-13 08:13 UTCGHSA enrichment
  17. 2026-09-12 15:00 UTCEPSS rescore
  18. 2026-09-12 13:32 UTCGHSA enrichment
  19. 2026-09-12 02:59 UTCEG score recompute
  20. 2026-09-12 02:59 UTCGHSA enrichment
  21. 2026-09-11 14:52 UTCEPSS rescore
  22. 2026-09-11 09:36 UTCEPSS rescore
  23. 2026-09-10 09:34 UTCEPSS rescore
  24. 2026-09-08 22:00 UTCEPSS rescore
  25. 2026-09-08 02:54 UTCEG score recompute
Show 75 more
  1. 2026-09-08 02:54 UTCGHSA enrichment
  2. 2026-09-07 16:01 UTCEPSS rescore
  3. 2026-09-06 13:57 UTCEG score recompute
  4. 2026-09-06 13:57 UTCGHSA enrichment
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-06 01:49 UTCGHSA enrichment
  7. 2026-09-05 21:45 UTCEG score recompute
  8. 2026-09-05 21:45 UTCGHSA enrichment
  9. 2026-09-04 05:06 UTCEPSS rescore
  10. 2026-09-02 14:11 UTCEPSS rescore
  11. 2026-09-01 13:53 UTCEPSS rescore
  12. 2026-09-01 04:39 UTCEPSS rescore
  13. 2026-08-31 14:30 UTCEG score recompute
  14. 2026-08-31 14:30 UTCGHSA enrichment
  15. 2026-08-31 14:01 UTCEG score recompute
  16. 2026-08-31 14:01 UTCGHSA enrichment
  17. 2026-08-31 00:06 UTCGHSA enrichment
  18. 2026-08-30 20:21 UTCEG score recompute
  19. 2026-08-30 20:20 UTCGHSA enrichment
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 16:35 UTCGHSA enrichment
  22. 2026-08-30 11:11 UTCGHSA enrichment
  23. 2026-08-30 06:26 UTCEG score recompute
  24. 2026-08-30 06:26 UTCGHSA enrichment
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-28 21:41 UTCEPSS rescore
  27. 2026-08-28 02:39 UTCGHSA enrichment
  28. 2026-08-27 21:41 UTCEG score recompute
  29. 2026-08-27 21:41 UTCGHSA enrichment
  30. 2026-08-27 14:25 UTCEPSS rescore
  31. 2026-08-27 00:50 UTCEG score recompute
  32. 2026-08-27 00:50 UTCGHSA enrichment
  33. 2026-08-26 14:46 UTCEPSS rescore
  34. 2026-08-26 12:54 UTCGHSA enrichment
  35. 2026-08-26 08:16 UTCGHSA enrichment
  36. 2026-08-26 03:39 UTCGHSA enrichment
  37. 2026-08-25 15:53 UTCEG score recompute
  38. 2026-08-25 15:53 UTCGHSA enrichment
  39. 2026-08-25 13:48 UTCEPSS rescore
  40. 2026-08-25 11:35 UTCGHSA enrichment
  41. 2026-08-25 07:33 UTCGHSA enrichment
  42. 2026-08-25 03:47 UTCGHSA enrichment
  43. 2026-08-25 00:01 UTCGHSA enrichment
  44. 2026-08-24 20:16 UTCEG score recompute
  45. 2026-08-24 20:15 UTCGHSA enrichment
  46. 2026-08-24 13:15 UTCGHSA enrichment
  47. 2026-08-24 09:29 UTCEG score recompute
  48. 2026-08-24 09:29 UTCGHSA enrichment
  49. 2026-08-24 03:56 UTCGHSA enrichment
  50. 2026-08-24 00:09 UTCGHSA enrichment
  51. 2026-08-23 20:22 UTCGHSA enrichment
  52. 2026-08-23 16:36 UTCGHSA enrichment
  53. 2026-08-23 12:51 UTCGHSA enrichment
  54. 2026-08-23 09:05 UTCGHSA enrichment
  55. 2026-08-23 05:18 UTCGHSA enrichment
  56. 2026-08-23 01:28 UTCEG score recompute
  57. 2026-08-23 01:28 UTCGHSA enrichment
  58. 2026-08-23 00:19 UTCEPSS rescore
  59. 2026-08-22 21:35 UTCGHSA enrichment
  60. 2026-08-22 17:29 UTCGHSA enrichment
  61. 2026-08-22 12:44 UTCGHSA enrichment
  62. 2026-08-22 08:57 UTCGHSA enrichment
  63. 2026-08-22 05:10 UTCGHSA enrichment
  64. 2026-08-22 01:23 UTCEG score recompute
  65. 2026-08-22 01:23 UTCGHSA enrichment
  66. 2026-08-21 23:49 UTCEPSS rescore
  67. 2026-08-21 21:37 UTCGHSA enrichment
  68. 2026-08-21 17:52 UTCGHSA enrichment
  69. 2026-08-21 14:06 UTCGHSA enrichment
  70. 2026-08-21 10:14 UTCGHSA enrichment
  71. 2026-08-21 06:29 UTCGHSA enrichment
  72. 2026-08-21 02:43 UTCGHSA enrichment
  73. 2026-08-20 22:56 UTCEG score recompute
  74. 2026-08-20 22:56 UTCGHSA enrichment
  75. 2026-08-20 22:55 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15143?
CVE-2026-15143 is a critical vulnerability published on July 10, 2026. A flaw was found in the file_type content detector of guardrails-detectors. This vulnerability allows a remote attacker to supply an arbitrary XML Schema Definition (XSD) string, which is processed without proper restrictions. This can lead to server-side requests to arbitrary URLs or local file…
When was CVE-2026-15143 disclosed?
CVE-2026-15143 was first published in the National Vulnerability Database on July 10, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15143 actively exploited?
CVE-2026-15143 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 63.0% of all scored CVEs.
What is the CVSS score of CVE-2026-15143?
CVE-2026-15143 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-15143?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15143, 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.

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