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CVE-2023-34088

15
FAUCET Score

CVE-2023-34088 is a stored cross-site scripting (XSS) vulnerability affecting Collabora Online versions prior to 22.05.13, 21.11.9.1, and 6.4.27. An attacker could embed an XSS payload in a document name, which would execute in an administrator's browser when they viewed the history page in the admin console. This could lead to the leakage of the administrator's JSON web token (JWT). The vulnerability has a CVSS score of 5.4 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and resulting in low confidentiality and integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.4.27CPE matchmatch criteria
cpe:2.3:a:collaboraoffice:collabora_online:*:*:*:*:*:*:*:*
>= 21.0, < 21.11.9.1CPE matchmatch criteria
cpe:2.3:a:collaboraoffice:collabora_online:*:*:*:*:*:*:*:*
>= 22.0, < 22.05.13CPE matchmatch criteria
cpe:2.3:a:collaboraoffice:collabora_online:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 49th percentile among its peer group of 15,225 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, 0.0 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

Remediation records are not available for this CVE.

References

github.com / CollaboraOnline/online/security/advisories/GHSA-7582-pwfh-3pwr
Third Party Advisory