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CVE-2023-29489

MEDIUM
6.1
CVSS Score
Published: April 27, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:50 AM UTC
1 product affected across 1 vendorCpanel

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Severity
MEDIUM6.1
Exploit prediction
EPSS 66%
SSVC
PoC

Description

An issue was discovered in cPanel before 11.109.9999.116. XSS can occur on the cpsrvd error page via an invalid webcall ID, aka SEC-669. The fixed versions are 11.109.9999.116, 11.108.0.13, 11.106.0.18, and 11.102.0.31.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cpanel· Cpanel
95%
v < 11.102.0.31v < 11.109.9999.11611.104.0 ≤ v < 11.106.0.1811.108.0 ≤ v < 11.108.0.1311.109.0 ≤ v < 11.109.9999.11611.109.9999.116
Affected range stops below 11.102.0.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.106.0.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 11.108.0.13, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 11.109.9999.116 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Exploit
Source: [email protected]
https://blog.assetnote.io/2023/04/26/xss-million-websites-cpanel/
Vendor Advisory
Source: [email protected]
https://forums.cpanel.net/threads/cpanel-tsr-2023-0001-full-disclosure.708949/

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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