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CVE-2021-43823

22
FAUCET Score

CVE-2021-43823 is a side-channel vulnerability in Sourcegraph versions prior to 3.33.2, affecting its Saved Searches and Code Monitoring features. An authenticated but unauthorized attacker could repeatedly create specific searches to confirm the existence of strings in private source code, potentially revealing sensitive information like API keys. Rated 6.5 MEDIUM, this low-complexity attack requires user authentication and could lead to high confidentiality impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.33.2CPE matchmatch criteria
cpe:2.3:a:sourcegraph:sourcegraph:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.84%
Probability of exploitation in next 30 days
EPSS Percentile
54.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0084 is in the 66th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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 / sourcegraph/sourcegraph/commit/a88d90a8302c492282186d39718cd8fb093c14fa
PatchThird Party Advisory
github.com / sourcegraph/sourcegraph/security/advisories/GHSA-cpq7-hmvv-29w9
Third Party Advisory