7.3

CVE-2026-39883: OpenTelemetry-Go has an incomplete fix for CVE-2026-24051: BSD kenv command not using absolute path enables PATH hijacking

Modified
AliasesUBUNTU-CVE-2026-39883CGA-22ph-cf56-m54rCGA-22vh-2rv8-87ch
Published 08-04-2026Last modified 09-09-2026

Vulnerability summary

CVE-2026-39883 is a high (CVSS 7.3) Untrusted Search Path vulnerability in open-telemetry opentelemetry-go. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16.8% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (GitHub, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.3/10
010
High · v4.0 (CVE.org)
EPSS score
0.25%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 4 · Related 5

Timeline

  1. 08-04-2026
    PublishedVulnerability first disclosed.
  2. 09-09-2026
    Last modifiedVulnerability information updated.

Description

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.15.0 to 1.42.0, the fix for CVE-2026-24051 changed the Darwin ioreg command to use an absolute path but left the BSD kenv command using a bare name, allowing the same PATH hijacking attack on BSD and Solaris platforms. This vulnerability is fixed in 1.43.0.

CVSS metrics

9 scores · 6 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

Increase +0.05 pp

From 0.21% 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

1 found
  • githubUnverified

    Opentelemetry Go

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard200 products
  • aactl< 0.4.12-r56
  • addon-resizer< 1.8.23-r22
  • addon-resizer-fips< 1.8.23-r22
  • agentbeat< 9.2.7-r4
  • agentbeat-fips< 9.2.7-r5

1 vendor · 200 products · Showing 200 of 2736

References

17 links
Show all 17 references