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CVE-2017-0910

22
FAUCET Score

CVE-2017-0910 is a high-severity vulnerability affecting Zulip Server versions prior to 1.7.1. It allows an authenticated user in one realm to create user accounts in other realms on the same server, potentially leading to unauthorized access, data compromise, and denial of service. The CVSS score of 8.8 indicates a network-exploitable vulnerability with low attack complexity and high impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the FAUCET Risk Score of 68/100 suggests a notable risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.1CPE matchmatch criteria
cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.09%
Probability of exploitation in next 30 days
EPSS Percentile
61.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0109 is in the 58th percentile among its peer group of 17,844 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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

blog.zulip.org / 2017/11/23/zulip-1-7-1-released
Vendor Advisory
github.com / zulip/zulip/commit/960d736e55cbb9386a68e4ee45f80581fd2a4e32
PatchThird Party Advisory