CVE-2026-27971 (GCVE-0-2026-27971)

Vulnerability from cvelistv5 – Published: 2026-03-03 22:55 – Updated: 2026-03-04 16:05
VLAI Previdian
Title
Qwik affected by unauthenticated RCE via server$ Deserialization
Summary
Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-04 16:05 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version CPE status
QwikDev qwik Affected: < 1.19.1
guessed Create a notification for this product.
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d1ca1b8e-22a0-4653-82fa-5dfd11514b69

Vulnerability ID: CVE-2026-27971

Status: Confirmed

Status Updated: 2026-08-22 16:14 UTC

Exploited: Yes

Timestamps
First Seen: 2026-08-22
Asserted: 2026-08-22
Scope
Notes: Qwik affected by unauthenticated RCE via server$ Deserialization | Affected: QwikDev / qwik | CVSS: 9.2 (CRITICAL) | EPSS: 0.05416 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Qwik affected by unauthenticated RCE via server$ Deserialization
Vendor QwikDev
Product qwik
Added Date 2026-08-22T16:14:01.179Z
Cvss Score 9.2
Epss Score 0.05416
Cvss Severity CRITICAL
Epss Percentile 0.92086
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-08-23 17:00 UTC | Updated: 2026-08-23 17:00 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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