CVE-2025-9883Network attack vector

Stored script injection via forged settings request

Published Sep 20, 2025 · Updated Sep 20, 2025

Cross-site request forgery in Browser Sniff 2.3 and earlier allows remote attackers to store malicious scripts through forged settings requests. Missing or incorrect nonce validation lets an unnamed settings function accept attacker-controlled updates; no function or parameter is publicly disclosed. A site administrator must be tricked into submitting the request, after which the stored script executes in an administrative browser.

CVSS severity6.1
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Browser Sniff 2.3 and earlier allows remote attackers to store malicious scripts through forged settings requests. Missing or incorrect nonce validation lets an unnamed settings function accept attacker-controlled updates; no function or parameter is publicly disclosed. A site administrator must be tricked into submitting the request, after which the stored script executes in an administrative browser.

The record

CVE
CVE-2025-9883
Published
Sep 20, 2025
Updated
Sep 20, 2025
Vendor
bpedrassani
Product
Browser Sniff
Classifications
CWE-352, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

bpedrassani · Browser Sniffversion=* <=2.3

Published CVSS scores

6.1WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204.001Malicious Link

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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