7.5

CVE-2026-41838: spring spring framework Use of Insufficiently Random Values

CVSS: 7.5v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-41838DEBIAN-CVE-2026-41838GHSA-q723-847q-5g8g
Published 09-06-2026Last modified 27-06-2026
Open JSON

Vulnerability summary

CVE-2026-41838 is a high (CVSS 7.5) Use of Insufficiently Random Values vulnerability in spring spring framework. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.29%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-06-2026
    PublishedVulnerability first disclosed.
  2. 27-06-2026
    Last modifiedVulnerability information updated.

Description

IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.12 pp

From 0.17% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.29%

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

Debian1 product
  • libspring-javaAll versions (No fix recorded)
Org.springframework1 product
  • spring-websocket≥ 7.0.0, < 7.0.8 | ≥ 6.2.0, < 6.2.19 | ≥ 6.1.0, ≤ 6.1.27 | ≤ 5.3.48
Spring1 product
  • spring framework≥ 7.0.0, < 7.0.7.1 | ≥ 6.2.0, < 6.2.18.1 | ≥ 6.1.0, < 6.1.28 | ≥ 5.3.0, < 5.3.49
Ubuntu1 product
  • libspring-javaAll versions (No fix recorded)
Vmware1 product
  • spring_framework≥ 5.3.0, < 5.3.49 | ≥ 6.1.0, < 6.1.28 | ≥ 6.2.0, < 6.2.18.1 | ≥ 7.0.0, < 7.0.7.1

5 vendors · 5 products

References

11 links
Show all 11 references