9.8

CVE-2019-11495: couchbase couchbase_server

CVSS: 9.8v3.1CriticalModified
Published 10-09-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-11495 is a critical (CVSS 9.8) vulnerability in couchbase couchbase_server. EPSS estimates a 2.14% chance of exploitation in the next 30 days, higher than 81.8% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 10-09-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In Couchbase Server 5.1.1, the cookie used for intra-node communication was not generated securely. Couchbase Server uses erlang:now() to seed the PRNG which results in a small search space for potential random seeds that could then be used to brute force the cookie and execute code against a remote system. This has been fixed in version 6.0.0.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

2.14%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

0.00 pp

From 2.14% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.14%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Couchbase1 product

1 vendor · 1 product

References

1 links