CVE-2026-3490Disclosure

LOWCVSS 10.0 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft
Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

NVD description

picklescan before 1.0.4 fails to block pkgutil.resolve_name, allowing attackers to bypass the entire blocklist by resolving any dangerous function through indirect REDUCE calls. Remote attackers can invoke any blocked function such as os.system, builtins.exec, or subprocess.call to achieve remote code execution.

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1.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-183

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

Public PoC is present in monitored signal
2 mentions across 2 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Technical details provided in 1 signal
Disclosure: 1 classified signal
Peaked 1d ago at 1 mentions (2026-06-18); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification2 categories

Disclosure

150.0%

PoC

150.0%

Referenced assets1 URL

By indicator

https://threataft.com/articles/cve-2026-3490-cve-2026-53874-picklescan-double-bypass-ai-supply-chain

Classification over time

Date	Total	Labels

2026-06-18	1	Disclosure1
2026-06-26	1	PoC1

Full discourse2 posts

Kaitan ID Security@KaitanSecurity128d
PoC
🎯 picklescan Blocklist Bypass Earns a Perfect 10 — and Has a Proof of Concept CVE-2026-3490 is the most operationally dangerous vulnerability this week. picklescan, the widely-used Python tool for detecting malicious pickle files in ML pipelines, fails to…
Post summary
The post announces CVE-2026-3490 in picklescan, indicating a Proof of Concept exists, but it provides no exploit details, active exploitation claims, patch information, or deeper technical specifics.
1000029
82 followersView on X
ThreatAft@ThreatAft136d
Disclosure
🔐 🚨 CRITICAL: Picklescan Double Bypass — AI/ML Supply Chain at Risk CVE-2026-3490 (CVSS 10.0) + CVE-2026-53874 (CVSS 9.8) Universal blocklist bypass via pkgutil.resolve_name. 🔗 https://threataft.com/articles/cve-2026-3490-cve-2026-53874-picklescan-double-bypass-ai-supply-chain #CyberSecurity #ThreatIntel #infosec #AISecurity #ML
Post summary
The post announces two critical CVEs (CVE-2026-3490, CVE-2026-53874) with high CVSS scores, explains a blocklist bypass technique via pkgutil.resolve_name, but provides no PoC, exploit code, or mitigation details.
0000071
31 followersView on X

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