CVE-2018-9845

CRITICALNVD 9.89.8—Trending — 4 sources updated this weekElevated

9.8

Etherpad Lite before 1.6.4 is exploitable for admin access.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 99.0%
KEV: Not listed

Published

April 29, 2018

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://github.com/ether/etherpad-lite/blob/develop/CHANGELOG.md
cve@mitrehttps://github.com/ether/etherpad-lite/commit/ffe24c3dd93efc73e0cbf924db9a0cc40be9511b
af854a3a-2127-422b-91ae-364da2661108https://github.com/ether/etherpad-lite/blob/develop/CHANGELOG.md
af854a3a-2127-422b-91ae-364da2661108https://github.com/ether/etherpad-lite/commit/ffe24c3dd93efc73e0cbf924db9a0cc40be9511b

Weakness Classification(1)

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

CWE-178Improper Handling of Case Sensitivity

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 08:33 UTCEG score recompute
2026-05-28 08:33 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
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 ↗

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 99.0% 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.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-9845

Explore →

Is Your Infrastructure Affected by CVE-2018-9845?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs