https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T23:27:02.965978+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2025-27516 CVE-2025-27516 — Jinja sandbox breakout through attr filter selecting format method 2026-09-28T23:27:02.969118+00:00

Affected: pallets jinja

Jinja is an extensible templating engine. Prior to 3.1.6, an oversight in how the Jinja sandboxed environment interacts with the |attr filter allows an attacker that controls the content of a template to execute arbitrary Python code. To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates. Jinja's sandbox does catch calls to str.format and ensures they don't escape the sandbox. However, it's possible to use the |attr filter to get a reference to a string's plain format method, bypassing the sandbox. After the fix, the |attr filter no longer bypasses the environment's attribute lookup. This vulnerability is fixed in 3.1.6.

 https://vulnerability.circl.lu/vuln/ghsa-cpwx-vrp4-4pq7 GHSA-cpwx-vrp4-4pq7 — Jinja2 vulnerable to sandbox breakout through attr filter selecting format method 2026-09-28T23:27:02.969222+00:00

Affected: PyPI: Jinja2

An oversight in how the Jinja sandboxed environment interacts with the `|attr` filter allows an attacker that controls the content of a template to execute arbitrary Python code.

To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates.

Jinja's sandbox does catch calls to `str.format` and ensures they don't escape the sandbox. However, it's possible to use the `|attr` filter to get a reference to a string's plain format method, bypassing the sandbox. After the fix, the `|attr` filter no longer bypasses the environment's attribute lookup.

 https://vulnerability.circl.lu/vuln/pysec-2026-1471 PYSEC-2026-1471 — Jinja2 vulnerable to sandbox breakout through attr filter selecting format method 2026-09-28T23:27:02.969279+00:00

Affected: PyPI: jinja2

An oversight in how the Jinja sandboxed environment interacts with the `|attr` filter allows an attacker that controls the content of a template to execute arbitrary Python code.

To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates.

Jinja's sandbox does catch calls to `str.format` and ensures they don't escape the sandbox. However, it's possible to use the `|attr` filter to get a reference to a string's plain format method, bypassing the sandbox. After the fix, the `|attr` filter no longer bypasses the environment's attribute lookup.