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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2024-56136

17
FAUCET Score

CVE-2024-56136 is an information disclosure vulnerability affecting Zulip Server versions 7.0 and above. An unauthenticated attacker can determine if an email address is associated with a user on a multi-organization Zulip server. This vulnerability has a CVSS score of 5.3 (Medium), indicating a low impact on confidentiality with no integrity or availability impact, and requires no user interaction or privileges. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE. Users are advised to upgrade to Zulip Server 9.4 or the latest main branch to mitigate this issue.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.0, < 9.4CPE matchmatch criteria
cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.9MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 27th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 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 / zulip/zulip/commit/c6334a765b1e6d71760e4a3b32ae5b8367f2ed4d
Patch
github.com / zulip/zulip/security/advisories/GHSA-5xg8-xhfj-4hm6
Third Party Advisory