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CVE-2021-3857

21
FAUCET Score

CVE-2021-3857 is a medium-severity cross-site scripting (XSS) vulnerability affecting the chaskiq chaskiq application. An authenticated attacker could exploit this by injecting malicious scripts into web pages, potentially leading to limited impact on confidentiality and integrity. While the attack complexity is low, user interaction is required for successful exploitation. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.9.8CPE matchmatch criteria
cpe:2.3:a:chaskiq:chaskiq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.3HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 74th percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 / chaskiq/chaskiq/commit/bffa585862b11cc05229ab3ed621d68f70ed33d0
PatchThird Party Advisory
huntr.dev / bounties/18f7eaee-6309-40cb-aed3-d5ac0af03cf3
ExploitThird Party Advisory