CVE-2018-9845

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-13. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 13%CVSS: 9.8Exploit: NoneExposed: 0

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

Etherpad Lite before 1.6.4 is exploitable for admin access.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
95.9%
KEV
Not listed

Published

April 29, 2018

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Jun 7, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit ffe24c3dd93e (ether/etherpad-lite)

Patch available: ether/etherpad-lite v2.0.0 (contains commit ffe24c3dd93e)

https://github.com/ether/etherpad-lite/commit/ffe24c3dd93efc73e0cbf924db9a0cc40be9511b
generic

etherpad/CHANGELOG.md at develop · ether/etherpad · GitHub

https://github.com/ether/etherpad-lite/blob/develop/CHANGELOG.md

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 38× 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. 2026-07-16 16:59 UTCEPSS rescore
  2. 2026-07-16 16:59 UTCEPSS rescore
  3. 2026-07-15 16:55 UTCEPSS rescore
  4. 2026-07-13 22:27 UTCEPSS rescore
  5. 2026-07-12 05:43 UTCEPSS rescore
  6. 2026-07-09 19:06 UTCEPSS rescore
  7. 2026-07-08 15:11 UTCEPSS rescore
  8. 2026-07-08 15:11 UTCEPSS rescore
  9. 2026-07-07 13:42 UTCEPSS rescore
  10. 2026-07-07 13:42 UTCEPSS rescore
  11. 2026-07-06 16:25 UTCEPSS rescore
  12. 2026-07-06 16:24 UTCEPSS rescore
  13. 2026-07-06 02:20 UTCEPSS rescore
  14. 2026-07-05 02:27 UTCEPSS rescore
  15. 2026-07-04 09:26 UTCOSV refresh
  16. 2026-07-04 06:28 UTCEPSS rescore
  17. 2026-07-04 06:28 UTCEPSS rescore
  18. 2026-07-01 15:03 UTCEPSS rescore
  19. 2026-07-01 15:03 UTCEPSS rescore
  20. 2026-06-30 23:20 UTCEPSS rescore
  21. 2026-06-30 23:20 UTCEPSS rescore
  22. 2026-06-28 14:04 UTCEPSS rescore
  23. 2026-06-28 04:53 UTCEPSS rescore
  24. 2026-06-28 04:53 UTCEPSS rescore
  25. 2026-06-27 03:06 UTCEPSS rescore
Show 45 more
  1. 2026-06-27 03:06 UTCEPSS rescore
  2. 2026-06-25 13:47 UTCEPSS rescore
  3. 2026-06-25 13:47 UTCEPSS rescore
  4. 2026-06-24 14:02 UTCEPSS rescore
  5. 2026-06-24 14:02 UTCEPSS rescore
  6. 2026-06-23 21:30 UTCEPSS rescore
  7. 2026-06-23 21:30 UTCEPSS rescore
  8. 2026-06-22 14:23 UTCEPSS rescore
  9. 2026-06-22 14:23 UTCEPSS rescore
  10. 2026-06-21 01:57 UTCEPSS rescore
  11. 2026-06-21 01:57 UTCEPSS rescore
  12. 2026-06-19 19:23 UTCEPSS rescore
  13. 2026-06-19 19:23 UTCEPSS rescore
  14. 2026-06-18 17:50 UTCEPSS rescore
  15. 2026-06-18 17:50 UTCEPSS rescore
  16. 2026-06-17 17:50 UTCEPSS rescore
  17. 2026-06-16 17:50 UTCEPSS rescore
  18. 2026-06-16 17:50 UTCEPSS rescore
  19. 2026-06-15 20:43 UTCOSV refresh
  20. 2026-06-15 17:45 UTCEPSS rescore
  21. 2026-06-12 23:09 UTCEPSS rescore
  22. 2026-06-12 23:09 UTCEPSS rescore
  23. 2026-06-11 13:57 UTCEPSS rescore
  24. 2026-06-10 22:16 UTCEPSS rescore
  25. 2026-06-08 14:14 UTCEPSS rescore
  26. 2026-06-07 15:22 UTCEPSS rescore
  27. 2026-06-07 15:22 UTCEPSS rescore
  28. 2026-06-06 13:45 UTCEPSS rescore
  29. 2026-06-06 13:45 UTCEPSS rescore
  30. 2026-06-05 22:45 UTCEPSS rescore
  31. 2026-06-05 22:45 UTCEPSS rescore
  32. 2026-06-05 06:08 UTCEPSS rescore
  33. 2026-06-05 06:08 UTCEPSS rescore
  34. 2026-06-01 13:50 UTCEPSS rescore
  35. 2026-05-31 00:14 UTCEPSS rescore
  36. 2026-05-31 00:14 UTCEPSS rescore
  37. 2026-05-29 13:41 UTCEPSS rescore
  38. 2026-05-28 13:43 UTCEPSS rescore
  39. 2026-05-28 13:42 UTCEPSS rescore
  40. 2026-05-28 08:33 UTCEG score recompute
  41. 2026-05-28 08:33 UTCGHSA enrichment
  42. 2026-05-27 13:38 UTCEPSS rescore
  43. 2026-05-26 07:17 UTCEPSS rescore
  44. 2026-05-26 07:17 UTCEPSS rescore
  45. 2026-05-25 16:16 UTCOSV refresh

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2018/CVE-2018-9845.yaml
    First seen Jan 1, 2018

    Etherpad Lite <1.6.4 - Admin Authentication Bypass

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2018-9845?
CVE-2018-9845 is a critical vulnerability published on April 29, 2018. Etherpad Lite before 1.6.4 is exploitable for admin access.
When was CVE-2018-9845 disclosed?
CVE-2018-9845 was first published in the National Vulnerability Database on April 29, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-9845 actively exploited?
CVE-2018-9845 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 95.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2018-9845?
CVE-2018-9845 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2018-9845?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-9845, 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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