VulnSocial

CVE-2026-9375Disclosure

MEDIUM

Exploitation observed; activity peaked at 3 mentions and remains active

Immediate actions

  • Patch affected systems immediately
  • Assume compromise if assets are exposed

Recommended action window: Immediate (within 24h)

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4.0/ 10 priority

Priority

MEDIUM

Exploitation

ACTIVE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Active exploitation appears in 1 classified signals
  • Patch or workaround signal is available
  • 4 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 4 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 1d ago at 3 mentions (2026-06-20); latest day: 1
  • 4 total mentions across 2 days

Deep dive

Activity timeline4 mentions / 2d
01223Mentions · 2026-06-20: 3Mentions · 2026-06-21: 1Active Exploitation · 2026-06-20: 1Patch / Workaround · 2026-06-20: 1Patch / Workaround · 2026-06-21: 1Technical Details · 2026-06-20: 3Technical Details · 2026-06-21: 106-2006-21
Signal classification3 categories
Disclosure
250.0%
General
125.0%
Patch
125.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-06-203
Disclosure1General1Patch1
2026-06-211
Disclosure1
Full discourse4 posts
  • Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters
    Disclosure

    #CVE-2026-9375 - DoS in Urllib3. Decompression bomb bypass in streaming #API with Brotli. #CVSS 7.5. No patch available yet. Monitor for updates. #infosec #python #CVEAlert #DevSecOps #sysadmin #cybersecurity More info: https://www.valtersit.com/cve/CVE-2026-9375

    Post summary

    A new CVE-2026-9375 DoS vulnerability in urllib3’s Brotli streaming API has been disclosed with a CVSS score of 7.5. No patch is available yet, so monitoring is advised.

    0000048
    953 followersView on X
  • 𝔸𝕟𝕠𝕟𝕪𝕞𝕠𝕦𝕤 ℍ𝕒𝕔𝕜𝕥𝕚𝕧𝕚𝕤𝕥☭⃠🅇@YourAnon_irc
    Patch

    Recent CVEs (June 19): urllib3 DoS (CVE-2026-9375) & NI grpc-device auth bypass (CVE-2026-9142) threaten data privacy/integrity. Zero-days in Chrome, Oracle, OWA also exploited. Patch now! #Cybersecurity #Vulnerabilities #News

    Post summary

    The post announces newly disclosed CVEs that are actively exploited and urges immediate patching to mitigate the risk.

    0000058
    14 followersView on X
  • Infoflowcloud@infoflowcloud
    General

    🚨*CVE* CVE-2026-9375 urllib3 version 2.6.3 is vulnerable to a decompression bomb bypass in its streaming API (`preload_content=False`) when using Brotli support. The issue arises due to thr… https://www.cve.org/CVERecord?id=CVE-2026-9375 ----- Traducción: CVE-2026-9375 url… http://infoflow.cloud`

    Post summary

    The post references CVE‑2026‑9375, noting a decompression‑bomb bypass vulnerability in urllib3’s Brotli‑enabled streaming API, but it offers no PoC, exploit code, active‑exploitation evidence, or patch details.

    0000029
    88 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-9375 urllib3 version 2.6.3 is vulnerable to a decompression bomb bypass in its streaming API (`preload_content=False`) when using Brotli support. The issue arises due to thr… https://www.cve.org/CVERecord?id=CVE-2026-9375

    Post summary

    CVE-2026-9375 is a newly disclosed vulnerability affecting urllib3 2.6.3, enabling a decompression bomb bypass via the Brotli-enabled streaming API.

    00000237
    57.7K followersView on X

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