VulnSocial

CVE-2026-55830Disclosure

LOWCVSS 8.3 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

RestrictedPython is a tool that helps to define a subset of the Python language which allows to provide a program input into a trusted environment. Prior to 8.3, check_function_argument_names() rejected protected guard hook names for regular, variadic, and keyword-only arguments but omitted positional-only arguments, allowing __getattr__, _getitem_, _write_, or _print_ to be shadowed by a local parameter and bypass the embedding application's access policy. This issue is fixed in version 8.3.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-184

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-29: 1Technical Details · 2026-08-29: 108-29
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • DailyCVE@dailycve
    Disclosure

    🔴 RestrictedPython, Sandbox Bypass via Guard Hook Shadowing, #CVE-2026-55830 (High) -DC-Aug2026-2038 https://dailycve.com/restrictedpython-sandbox-bypass-via-guard-hook-shadowing-cve-2026-55830-high-dc-aug2026-2038/

    Post summary

    A new high‑severity vulnerability (CVE‑2026‑55830) has been announced for RestrictedPython, enabling a sandbox bypass by shadowing guard hooks. No PoC, exploit, or patches are detailed in the provided text.

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    233 followersView on X

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