E-Mails exported as PDF were stored in a cache that did not consider specific session information for the related user account.

published 2024-05-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-20712

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

E-Mails exported as PDF were stored in a cache that did not consider specific session information for the related user account. Users of the same service node could access other users E-Mails in case they were exported as PDF for a brief moment until caches were cleared. Successful exploitation requires good timing and modification of multiple request parameters. Please deploy the provided updates and patch releases. The cache for PDF exports now takes user session information into consideration when performing authorization decisions. No publicly available exploits are known.

Patch / fix

fixed in 2

open-xchange open-xchange_appsuite_office 8.22
open-xchange open-xchange_office 8.22

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-06-12)

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

Open-Xchange GmbH OX App Suite

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-384 Session Fixation

References

documentation.open-xchange.com /appsuite/security/advisories/csaf/2024/oxas-adv-2024-0002.json
vendor-advisory, issue-tracking
documentation.open-xchange.com /appsuite/releases/8.22/
release-notes
seclists.org /fulldisclosure/2024/May/3
mailing-list, third-party-advisory

Sources

CVE List CVE-2024-23193
NVD CVE-2024-23193

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary