CVE-2026-77129

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 85% 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
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

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

The extension passes an editor-configurable email subject string directly into a Fluid template source without restriction. A backend user with edit access to the event plugin or Backend Module can supply Fluid ViewHelper syntax in this field to disclose sensitive data or execute TypoScript content objects. Exploitation of this issue requires an authenticated backend account with edit access to the event registration plugin or backend module.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Aug 25, 2026
No patch confirmed yet.
generic

TYPO3-EXT-SA-2026-023: Multiple vulnerabilities in extension "Event management and registration" (sf_event_mgt) - TYPO3 News

https://typo3.org/security/advisory/typo3-ext-sa-2026-023

Vendor Advisories for CVE-2026-77129(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 24× in last 7d / 97× 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. 2026-09-19 05:08 UTCEG score recompute
  2. 2026-09-19 05:08 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 16:22 UTCGHSA enrichment
  5. 2026-09-18 03:23 UTCEG score recompute
  6. 2026-09-18 03:23 UTCGHSA enrichment
  7. 2026-09-17 14:38 UTCGHSA enrichment
  8. 2026-09-17 01:26 UTCEG score recompute
  9. 2026-09-17 01:26 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 12:41 UTCEG score recompute
  12. 2026-09-16 12:41 UTCGHSA enrichment
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 23:57 UTCGHSA enrichment
  15. 2026-09-15 11:12 UTCEG score recompute
  16. 2026-09-15 11:12 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-14 22:02 UTCGHSA enrichment
  19. 2026-09-14 09:14 UTCGHSA enrichment
  20. 2026-09-13 20:30 UTCEG score recompute
  21. 2026-09-13 20:30 UTCGHSA enrichment
  22. 2026-09-13 07:45 UTCGHSA enrichment
  23. 2026-09-12 19:01 UTCEG score recompute
  24. 2026-09-12 19:01 UTCGHSA enrichment
  25. 2026-09-12 15:02 UTCEPSS rescore
Show 72 more
  1. 2026-09-12 06:16 UTCGHSA enrichment
  2. 2026-09-11 17:31 UTCEG score recompute
  3. 2026-09-11 17:31 UTCGHSA enrichment
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 04:23 UTCGHSA enrichment
  6. 2026-09-10 15:37 UTCEG score recompute
  7. 2026-09-10 15:37 UTCGHSA enrichment
  8. 2026-09-10 09:35 UTCEPSS rescore
  9. 2026-09-10 02:46 UTCGHSA enrichment
  10. 2026-09-09 14:02 UTCGHSA enrichment
  11. 2026-09-09 01:17 UTCEG score recompute
  12. 2026-09-09 01:17 UTCGHSA enrichment
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-08 04:28 UTCEG score recompute
  15. 2026-09-08 04:28 UTCGHSA enrichment
  16. 2026-09-07 15:44 UTCGHSA enrichment
  17. 2026-09-07 02:59 UTCGHSA enrichment
  18. 2026-09-06 14:04 UTCEG score recompute
  19. 2026-09-06 14:04 UTCGHSA enrichment
  20. 2026-09-06 13:48 UTCEPSS rescore
  21. 2026-09-06 01:20 UTCEG score recompute
  22. 2026-09-06 01:20 UTCGHSA enrichment
  23. 2026-09-05 12:33 UTCGHSA enrichment
  24. 2026-09-04 23:48 UTCEG score recompute
  25. 2026-09-04 23:48 UTCGHSA enrichment
  26. 2026-09-04 11:04 UTCEG score recompute
  27. 2026-09-04 11:04 UTCGHSA enrichment
  28. 2026-09-04 05:07 UTCEPSS rescore
  29. 2026-09-03 22:17 UTCGHSA enrichment
  30. 2026-09-03 09:32 UTCGHSA enrichment
  31. 2026-09-02 20:45 UTCEG score recompute
  32. 2026-09-02 20:45 UTCGHSA enrichment
  33. 2026-09-02 14:12 UTCEPSS rescore
  34. 2026-09-02 07:56 UTCGHSA enrichment
  35. 2026-09-01 19:12 UTCEG score recompute
  36. 2026-09-01 19:12 UTCGHSA enrichment
  37. 2026-09-01 13:54 UTCEPSS rescore
  38. 2026-09-01 06:25 UTCEG score recompute
  39. 2026-09-01 06:25 UTCGHSA enrichment
  40. 2026-09-01 04:40 UTCEPSS rescore
  41. 2026-09-01 04:40 UTCEPSS rescore
  42. 2026-08-31 17:41 UTCGHSA enrichment
  43. 2026-08-31 03:21 UTCEG score recompute
  44. 2026-08-31 03:20 UTCGHSA enrichment
  45. 2026-08-30 19:18 UTCEPSS rescore
  46. 2026-08-30 19:17 UTCEPSS rescore
  47. 2026-08-30 14:36 UTCGHSA enrichment
  48. 2026-08-30 01:48 UTCEG score recompute
  49. 2026-08-30 01:48 UTCGHSA enrichment
  50. 2026-08-30 01:22 UTCEPSS rescore
  51. 2026-08-29 13:04 UTCGHSA enrichment
  52. 2026-08-29 00:18 UTCEG score recompute
  53. 2026-08-29 00:18 UTCGHSA enrichment
  54. 2026-08-28 21:42 UTCEPSS rescore
  55. 2026-08-28 07:49 UTCGHSA enrichment
  56. 2026-08-27 19:00 UTCEG score recompute
  57. 2026-08-27 19:00 UTCGHSA enrichment
  58. 2026-08-27 14:25 UTCEPSS rescore
  59. 2026-08-27 06:12 UTCGHSA enrichment
  60. 2026-08-26 17:23 UTCGHSA enrichment
  61. 2026-08-26 16:12 UTCEG score recompute
  62. 2026-08-26 16:12 UTCGHSA enrichment
  63. 2026-08-26 14:47 UTCEPSS rescore
  64. 2026-08-26 03:07 UTCGHSA enrichment
  65. 2026-08-25 14:21 UTCEG score recompute
  66. 2026-08-25 14:21 UTCGHSA enrichment
  67. 2026-08-25 14:15 UTCEG score recompute
  68. 2026-08-25 14:15 UTCGHSA enrichment
  69. 2026-08-25 13:49 UTCEPSS rescore
  70. 2026-08-25 09:22 UTCEG score recompute
  71. 2026-08-25 09:08 UTCEG score recompute
  72. 2026-08-25 09:06 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-77129?
CVE-2026-77129 is a high vulnerability published on August 25, 2026. The extension passes an editor-configurable email subject string directly into a Fluid template source without restriction. A backend user with edit access to the event plugin or Backend Module can supply Fluid ViewHelper syntax in this field to disclose sensitive data or execute TypoScript content…
When was CVE-2026-77129 disclosed?
CVE-2026-77129 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77129 actively exploited?
CVE-2026-77129 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 85.4% of all scored CVEs.
What is the CVSS score of CVE-2026-77129?
CVE-2026-77129 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-77129?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77129, 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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