CVE-2023-23849Network attack vector

Unauthenticated XSS via shared-subdomain cookie injection

Published Feb 6, 2023 · Updated Mar 25, 2025

Cross-site scripting in Synopsys Coverity Connect before 2022.12.0 allows remote attackers to compromise its web interface via a domain cookie. A web service on the same subdomain can set a cookie across that subdomain, and Coverity Connect accepts the attacker-controlled value in a way that bypasses its XSS mitigations. Exploitation requires control of another web service on the shared subdomain; successful abuse executes script in the Coverity Connect origin.

CVSS severity6.1
Medium
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Cross-site scripting in Synopsys Coverity Connect before 2022.12.0 allows remote attackers to compromise its web interface via a domain cookie. A web service on the same subdomain can set a cookie across that subdomain, and Coverity Connect accepts the attacker-controlled value in a way that bypasses its XSS mitigations. Exploitation requires control of another web service on the shared subdomain; successful abuse executes script in the Coverity Connect origin.

The record

CVE
CVE-2023-23849
Published
Feb 6, 2023
Updated
Mar 25, 2025
Vendor
Synopsys
Product
Coverity
Classifications
CWE-79
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2022.12.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Synopsys · Coverityversion=< 2022.12.0

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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