CRLF Injection Affecting request-1276 package, versions <0.30.1-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-REQUEST1276-20538594
  • published6 Oct 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-102938  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Chainguard request-1276 to version 0.30.1-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream request-1276 package and not the request-1276 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write() writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg._read_values() parses the file with str.splitlines() and accepts the last value for duplicate keys. An attacker who influences --prompt, VIRTUALENV_PROMPT, or configuration input can insert a recognized line boundary and additional keys, including home, causing consumers to use an attacker-selected base interpreter or corrupted environment metadata. The security impact requires prompt input from outside the operator's trust boundary; directly supplied prompt content primarily corrupts the operator's own environment. This issue is fixed in version 21.7.11.

CVSS Base Scores

version 3.1