PT-2026-30429 · Antaresmugisho · Pyblade

Zhangxinyu06 · Published 2026-04-05 · Updated 2026-04-05 · CVE-2026-5559

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions AntaresMugisho PyBlade versions 0.1.8-alpha through 0.1.9-alpha

Description A flaw exists in the AST Validation component of AntaresMugisho PyBlade. Specifically, the is safe ast function within the sandbox.py file is susceptible to improper neutralization of special elements used in a template engine. This allows for remote attacks. The exploit has been publicly disclosed.

Recommendations Update to a newer version of AntaresMugisho PyBlade that addresses this issue. As a temporary workaround, consider restricting access to the sandbox.py file or disabling the is safe ast function until a patch is available.

Exploit

Fix

Weakness Enumeration

CWE-791

CWE-1336

Related Identifiers

CVE-2026-5559

GHSA-23JG-5F8M-GW8C

Affected Products

Pyblade

References · 10

• 🔥 https://github.com/AntaresMugisho/PyBlade/issues/1#issue-4086730906 · Exploit
• https://osv.dev/vulnerability/GHSA-23jg-5f8m-gw8c · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5559 · Security Note
• https://github.com/AntaresMugisho/PyBlade · Note
• https://github.com/AntaresMugisho/PyBlade/issues/1 · Note
• https://twitter.com/CVEnew/status/2040747048811807017 · Twitter Post
• https://vuldb.com/vuln/355329/cti · Note
• https://twitter.com/infoflowcloud/status/2040747643073097781 · Twitter Post
• https://vuldb.com/submit/782904 · Note
• https://vuldb.com/vuln/355329 · Note