3.1

CVE-2026-68493: nextcloud server

CVSS: 3.1v3.0LowAwaiting analysis
AliasesCGA-4896-r2cp-3j22CGA-9wv9-xj86-9rpcCGA-gg33-j8f5-vv49
Published 18-09-2026Last modified 18-09-2026
Open JSON

Vulnerability summary

CVE-2026-68493 is a low (CVSS 3.1) vulnerability in nextcloud server. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.5% of scored vulnerabilities.

Overall risk
12/100
0100
Low · default modelHow is this calculated?
CVSS score
3.1/10
010
Low · v3.0 (CVE.org)
EPSS score
0.23%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 18-09-2026
    PublishedVulnerability first disclosed.
  2. 18-09-2026
    Last modifiedVulnerability information updated.

Description

After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

+0.09 pp

From 0.14% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard2 products
  • nextcloud-server-32All versions (No fix recorded)
  • nextcloud-server-33All versions (No fix recorded)
Nextcloud1 product
Wolfi1 product
  • nextcloud-server-33All versions (No fix recorded)

3 vendors · 4 products

References

1 links