CVE-2026-39893

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request variable was concatenated into a RLIKE SQL clause without sanitization. The endpoint does not require authentication (graph viewing supports guest access via the configured guest user), so the SQLi was reachable pre-auth on installs with guest viewing enabled. This issue was fixed in version 1.2.31.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
50%
KEV
Not listed

Published

June 24, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Sep 6, 2026
Patch available. Sources: github_pr, github.
github Patch Available

Pre-authentication SQL injection via rfilter RLIKE clause in graph_view.php · Advisory · Cacti/cacti · GitHub

https://github.com/Cacti/cacti/security/advisories/GHSA-69gg-mjfm-jjpc
github_pr Patch Available

security: consolidated defense-in-depth hardening (1.2.x)

Patch available: Cacti/cacti release/1.2.31 (PR #7039 merged 2026-04-12)

https://github.com/Cacti/cacti/pull/7039

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
cacti1.2.16+ds1-2 ... 1.2.31+ds1-2 (31 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
cacti1.2.24+ds1-1 ... 1.2.31+ds1-2 (20 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
cacti1.2.30+ds1-1, 1.2.30+ds1-2, 1.2.30+ds1-3, 1.2.31+ds1-1, 1.2.31+ds1-2——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
cacti1.2.30+ds1-1, 1.2.30+ds1-2, 1.2.30+ds1-31.2.31+ds1-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 39× 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 113 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-39893?
CVE-2026-39893 is a critical vulnerability published on June 24, 2026. Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request variable was concatenated into a RLIKE SQL clause without sanitization. The endpoint does not require authentication (graph viewing supports guest access via the configured guest…
When was CVE-2026-39893 disclosed?
CVE-2026-39893 was first published in the National Vulnerability Database on June 24, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39893 actively exploited?
CVE-2026-39893 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 49.9% of all scored CVEs.
What is the CVSS score of CVE-2026-39893?
CVE-2026-39893 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-39893?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39893, 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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