9.9

CVE-2026-32768: Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace

Analyzed
AliasesGHSA-mw24-f3xh-j3qvGO-2026-4718
Published 20-03-2026Last modified 20-03-2026

Vulnerability summary

CVE-2026-32768 is a critical (CVSS 9.9) Improper Access Control vulnerability in ctfer-io chall-manager. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 22.2% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.9 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.9/10
010
Critical · v3.1 (NVD)
EPSS score
0.29%
0%100%
Low · -0.23 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:1135-1

Timeline

  1. 20-03-2026
    PublishedVulnerability first disclosed.
  2. 20-03-2026
    Last modifiedVulnerability information updated.

Description

Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. In versions prior to 0.6.5, due to a miswritten NetworkPolicy, a malicious actor can pivot from an instance to any Pod out of the origin namespace. This breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement. In the specific case of sdk/kubernetes.Kompose it does not isolate the instances. This issue has been fixed in version 0.6.5.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

22%

Versus all other CVEs

30-day change

Decrease -0.23 pp

From 0.52% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/ctfer-io/chall-manager2 products
  • deploy< 0.6.5
  • sdk< 0.6.5
Ctfer-io1 product

2 vendors · 3 products

References

5 links