CVE-2026-27823

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.0%, top 39% 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
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.7Exploit: None knownExposed: 0

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

A vulnerability has been identified in EGroupware that may lead to Remote Code Execution (RCE). The issue allows an authenticated attacker to execute arbitrary commands on the server. If user self-registration is enabled, the vulnerability may be exploitable without prior authentication. The vulnerability stems from improper authorization checks combined with a file write primitive and an arbitrary file read vulnerability, which together enable full system compromise. This has been patched in versions 26.2.20260224 and 23.1.20260224.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
55(Track)
EG Risk 55/100SSVC: 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
Severity87% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
62%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 22, 2026

Advisory Details (1)

Auto-updated Jul 20, 2026
Patch available. Sources: github.
github Patch Available

Critical Remote Code Execution Vulnerability in EGroupware · Advisory · EGroupware/egroupware · GitHub

https://github.com/EGroupware/egroupware/security/advisories/GHSA-h9qx-v5xp-ph8p

Vendor Advisories for CVE-2026-27823(1)

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

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
egroupware/egroupware14.2.20150121 ... 23.1.20260131 (184 versions)23.1.20260224—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 45× 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. 2026-09-11 14:52 UTCEPSS rescore
  2. 2026-09-10 09:34 UTCEPSS rescore
  3. 2026-09-08 22:00 UTCEPSS rescore
  4. 2026-09-07 16:01 UTCEPSS rescore
  5. 2026-09-06 14:08 UTCEG score recompute
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-05 22:54 UTCEG score recompute
  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. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-30 19:34 UTCEG score recompute
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 07:43 UTCEG score recompute
  17. 2026-08-30 01:22 UTCEPSS rescore
  18. 2026-08-28 21:41 UTCEPSS rescore
  19. 2026-08-27 21:56 UTCEG score recompute
  20. 2026-08-27 14:25 UTCEPSS rescore
  21. 2026-08-27 02:01 UTCEG score recompute
  22. 2026-08-26 14:46 UTCEPSS rescore
  23. 2026-08-26 13:01 UTCEG score recompute
  24. 2026-08-25 13:48 UTCEPSS rescore
  25. 2026-08-24 20:39 UTCEG score recompute
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  1. 2026-08-23 05:45 UTCEG score recompute
  2. 2026-08-23 00:19 UTCEPSS rescore
  3. 2026-08-22 04:52 UTCEG score recompute
  4. 2026-08-21 23:49 UTCEPSS rescore
  5. 2026-08-21 04:13 UTCEG score recompute
  6. 2026-08-20 22:55 UTCEPSS rescore
  7. 2026-08-20 02:19 UTCEG score recompute
  8. 2026-08-19 17:03 UTCEPSS rescore
  9. 2026-08-18 20:48 UTCEG score recompute
  10. 2026-08-18 13:48 UTCEPSS rescore
  11. 2026-08-18 03:04 UTCEG score recompute
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 00:49 UTCEG score recompute
  14. 2026-08-16 14:56 UTCEPSS rescore
  15. 2026-08-16 12:57 UTCEG score recompute
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-15 13:15 UTCEG score recompute
  18. 2026-08-15 01:30 UTCEPSS rescore
  19. 2026-08-14 01:41 UTCEG score recompute
  20. 2026-08-13 22:00 UTCEPSS rescore
  21. 2026-08-12 14:05 UTCEG score recompute
  22. 2026-08-12 13:50 UTCEPSS rescore
  23. 2026-08-11 14:17 UTCEG score recompute
  24. 2026-08-11 13:42 UTCEPSS rescore
  25. 2026-08-11 02:25 UTCEG score recompute
  26. 2026-08-11 00:00 UTCEPSS rescore
  27. 2026-08-09 14:51 UTCEG score recompute
  28. 2026-08-09 13:46 UTCEPSS rescore
  29. 2026-08-09 03:00 UTCEG score recompute
  30. 2026-08-08 16:37 UTCEPSS rescore
  31. 2026-08-08 03:17 UTCEG score recompute
  32. 2026-08-06 15:44 UTCEG score recompute
  33. 2026-08-06 13:46 UTCEPSS rescore
  34. 2026-08-06 03:47 UTCEG score recompute
  35. 2026-08-05 19:17 UTCEPSS rescore
  36. 2026-08-05 01:36 UTCEG score recompute
  37. 2026-08-04 15:10 UTCEPSS rescore
  38. 2026-08-04 13:45 UTCEG score recompute
  39. 2026-08-03 12:57 UTCEG score recompute
  40. 2026-08-03 10:36 UTCEPSS rescore
  41. 2026-08-02 11:25 UTCEG score recompute
  42. 2026-08-02 02:26 UTCEPSS rescore
  43. 2026-08-01 11:41 UTCEG score recompute
  44. 2026-08-01 04:16 UTCEPSS rescore
  45. 2026-07-31 00:07 UTCEG score recompute
  46. 2026-07-30 16:27 UTCEPSS rescore
  47. 2026-07-30 12:14 UTCEG score recompute
  48. 2026-07-30 01:30 UTCEPSS rescore
  49. 2026-07-29 00:35 UTCEG score recompute
  50. 2026-07-28 15:36 UTCEPSS rescore
  51. 2026-07-28 00:39 UTCEG score recompute
  52. 2026-07-27 00:39 UTCEG score recompute
  53. 2026-07-26 14:54 UTCEPSS rescore
  54. 2026-07-26 14:54 UTCEPSS rescore
  55. 2026-07-26 12:41 UTCEG score recompute
  56. 2026-07-25 14:18 UTCEPSS rescore
  57. 2026-07-25 14:17 UTCEPSS rescore
  58. 2026-07-24 14:17 UTCEPSS rescore
  59. 2026-07-23 14:18 UTCEPSS rescore
  60. 2026-07-23 14:18 UTCEPSS rescore
  61. 2026-07-23 03:08 UTCEG score recompute
  62. 2026-07-22 14:08 UTCEPSS rescore
  63. 2026-07-22 14:08 UTCEPSS rescore
  64. 2026-07-21 15:24 UTCEPSS rescore
  65. 2026-07-21 15:24 UTCEPSS rescore
  66. 2026-07-20 16:04 UTCEG score recompute▲ 8.70
  67. 2026-07-20 16:02 UTCMITRE cvelistV5CVSS v3 → 8.7 · CVSS v4 → 8.7 · severity → HIGH
  68. 2026-07-07 13:38 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27823?
CVE-2026-27823 is a high vulnerability published on July 7, 2026. A vulnerability has been identified in EGroupware that may lead to Remote Code Execution (RCE). The issue allows an authenticated attacker to execute arbitrary commands on the server. If user self-registration is enabled, the vulnerability may be exploitable without prior authentication. The…
When was CVE-2026-27823 disclosed?
CVE-2026-27823 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27823 actively exploited?
CVE-2026-27823 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 38.4% of all scored CVEs.
What is the CVSS score of CVE-2026-27823?
CVE-2026-27823 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-27823?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27823, 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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