CVE-2026-12894

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-31. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the Qute template engine, which is used by Quarkus to generate dynamic content like HTML pages or emails. The issue exists in the component responsible for looking up data values (ReflectionValueResolver), which fails to properly block access to sensitive Java internal functions when processing certain data types like Enums. An attacker who can provide or influence the template text can exploit this bypass to take control of the server by executing unauthorized commands.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 11, 2026

Advisory Details (2)

Auto-updated Aug 31, 2026
Patch available. Sources: redhat.
redhat

2491319 – (CVE-2026-12894) CVE-2026-12894 quarkus-qute: io.quarkus.qute.ReflectionValueResolver: Quarkus:Server-Side Template Injection (SSTI) vulnerability in ReflectionValueResolver of the Quarkus Qute template engine

https://bugzilla.redhat.com/show_bug.cgi?id=2491319
redhat Patch Available

CVE-2026-12894 - 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-2026-12894

Vendor Advisories for CVE-2026-12894(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatquarkus-qute2026-09-03redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 99× 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. 2026-09-18 23:34 UTCEG score recompute
  2. 2026-09-18 23:34 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 10:21 UTCGHSA enrichment
  5. 2026-09-17 21:09 UTCEG score recompute
  6. 2026-09-17 21:09 UTCGHSA enrichment
  7. 2026-09-17 07:57 UTCGHSA enrichment
  8. 2026-09-16 18:45 UTCEG score recompute
  9. 2026-09-16 18:45 UTCGHSA enrichment
  10. 2026-09-16 05:14 UTCEPSS rescore
  11. 2026-09-16 04:31 UTCGHSA enrichment
  12. 2026-09-15 15:06 UTCEG score recompute
  13. 2026-09-15 15:06 UTCGHSA enrichment
  14. 2026-09-15 01:51 UTCGHSA enrichment
  15. 2026-09-14 12:39 UTCGHSA enrichment
  16. 2026-09-13 23:23 UTCEG score recompute
  17. 2026-09-13 23:23 UTCGHSA enrichment
  18. 2026-09-13 16:46 UTCEPSS rescore
  19. 2026-09-13 10:11 UTCGHSA enrichment
  20. 2026-09-12 20:59 UTCEG score recompute
  21. 2026-09-12 20:59 UTCGHSA enrichment
  22. 2026-09-12 15:00 UTCEPSS rescore
  23. 2026-09-12 07:47 UTCGHSA enrichment
  24. 2026-09-11 18:35 UTCVendor advisory
  25. 2026-09-11 18:35 UTCGHSA enrichment
Show 74 more
  1. 2026-09-11 17:34 UTCEG score recompute
  2. 2026-09-11 17:34 UTCVendor advisory
  3. 2026-09-11 17:34 UTCGHSA enrichment
  4. 2026-09-11 14:52 UTCEPSS rescore
  5. 2026-09-11 09:36 UTCEPSS rescore
  6. 2026-09-11 04:22 UTCVendor advisory
  7. 2026-09-11 04:22 UTCGHSA enrichment
  8. 2026-09-10 15:08 UTCEG score recompute
  9. 2026-09-10 15:08 UTCVendor advisory
  10. 2026-09-10 15:07 UTCGHSA enrichment
  11. 2026-09-10 09:34 UTCEPSS rescore
  12. 2026-09-10 01:55 UTCVendor advisory
  13. 2026-09-10 01:55 UTCGHSA enrichment
  14. 2026-09-09 12:43 UTCVendor advisory
  15. 2026-09-09 12:43 UTCGHSA enrichment
  16. 2026-09-08 23:30 UTCEG score recompute
  17. 2026-09-08 23:30 UTCVendor advisory
  18. 2026-09-08 23:30 UTCGHSA enrichment
  19. 2026-09-08 22:00 UTCEPSS rescore
  20. 2026-09-08 00:48 UTCEG score recompute
  21. 2026-09-08 00:48 UTCVendor advisory
  22. 2026-09-08 00:47 UTCGHSA enrichment
  23. 2026-09-07 16:01 UTCEPSS rescore
  24. 2026-09-07 11:35 UTCVendor advisory
  25. 2026-09-07 11:35 UTCGHSA enrichment
  26. 2026-09-06 22:22 UTCEG score recompute
  27. 2026-09-06 22:22 UTCVendor advisory
  28. 2026-09-06 22:22 UTCGHSA enrichment
  29. 2026-09-06 13:47 UTCEPSS rescore
  30. 2026-09-06 09:09 UTCVendor advisory
  31. 2026-09-06 09:09 UTCGHSA enrichment
  32. 2026-09-05 19:54 UTCEG score recompute
  33. 2026-09-05 19:54 UTCVendor advisory
  34. 2026-09-05 19:54 UTCGHSA enrichment
  35. 2026-09-05 06:42 UTCVendor advisory
  36. 2026-09-05 06:42 UTCGHSA enrichment
  37. 2026-09-04 17:28 UTCEG score recompute
  38. 2026-09-04 17:28 UTCVendor advisory
  39. 2026-09-04 17:28 UTCGHSA enrichment
  40. 2026-09-04 16:31 UTCEG score recompute
  41. 2026-09-04 16:31 UTCVendor advisory
  42. 2026-09-04 16:30 UTCGHSA enrichment
  43. 2026-09-04 15:26 UTCEG score recompute
  44. 2026-09-04 15:26 UTCVendor advisory
  45. 2026-09-04 15:26 UTCGHSA enrichment
  46. 2026-09-04 15:10 UTCVendor advisory
  47. 2026-09-04 15:09 UTCGHSA enrichment
  48. 2026-09-04 14:49 UTCEG score recompute
  49. 2026-09-04 14:49 UTCVendor advisory
  50. 2026-09-04 14:49 UTCGHSA enrichment
  51. 2026-09-04 08:41 UTCEG score recompute
  52. 2026-09-04 08:41 UTCVendor advisory
  53. 2026-09-04 08:40 UTCGHSA enrichment
  54. 2026-09-04 05:06 UTCEPSS rescore
  55. 2026-09-03 19:23 UTCEG score recompute
  56. 2026-09-03 19:23 UTCGHSA enrichment
  57. 2026-09-03 18:49 UTCEG score recompute
  58. 2026-09-03 18:48 UTCGHSA enrichment
  59. 2026-09-03 12:54 UTCGHSA enrichment
  60. 2026-09-02 23:39 UTCEG score recompute
  61. 2026-09-02 23:39 UTCGHSA enrichment
  62. 2026-09-02 14:11 UTCEPSS rescore
  63. 2026-09-02 10:26 UTCGHSA enrichment
  64. 2026-09-01 21:10 UTCGHSA enrichment
  65. 2026-09-01 17:49 UTCEG score recompute
  66. 2026-09-01 17:49 UTCGHSA enrichment
  67. 2026-09-01 13:53 UTCEPSS rescore
  68. 2026-09-01 04:36 UTCEG score recompute
  69. 2026-09-01 04:36 UTCGHSA enrichment
  70. 2026-08-31 15:23 UTCEG score recompute
  71. 2026-08-31 14:42 UTCEG score recompute
  72. 2026-08-31 13:25 UTCEG score recompute
  73. 2026-08-31 12:30 UTCEG score recompute
  74. 2026-08-31 12:29 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-12894?
CVE-2026-12894 is a high vulnerability published on August 31, 2026. A flaw was found in the Qute template engine, which is used by Quarkus to generate dynamic content like HTML pages or emails. The issue exists in the component responsible for looking up data values (ReflectionValueResolver), which fails to properly block access to sensitive Java internal functions…
When was CVE-2026-12894 disclosed?
CVE-2026-12894 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12894 actively exploited?
CVE-2026-12894 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 69.3% of all scored CVEs.
What is the CVSS score of CVE-2026-12894?
CVE-2026-12894 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-12894?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12894, 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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