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CVE-2020-36659

26
FAUCET Score

CVE-2020-36659 is a critical vulnerability in Apache::Session::Browseable versions prior to 1.3.6, affecting products like Debian Apache and LemonLDAP::NG. It stems from the default configuration of Net::LDAPS, which fails to validate X.509 certificates when connecting to remote LDAP backends. This allows for a high-impact attack with a CVSS score of 8.1, enabling remote attackers to potentially compromise confidentiality, integrity, and availability without user interaction. Despite its severity, there is currently no public exploit code, Metasploit modules, or significant community discussion, and it is not listed in CISA's KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.6CPE matchmatch criteria
cpe:2.3:a:lemonldap-ng:apache\:\:session\:\:browsable:*:*:*:*:*:perl:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 10th percentile among its peer group of 8,918 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / LemonLDAPNG/Apache-Session-Browseable/commit/fdf393235140b293cae5578ef136055a78f3574f
PatchThird Party Advisory
lists.debian.org / debian-lts-announce/2023/01/msg00025.html
Mailing ListThird Party Advisory