CVE-2019-25091Network attack vector

CSRF token disclosure via script-readable cookie

Published Dec 27, 2022 · Updated Aug 5, 2024

Sensitive cookie exposure in nsupdate.info before 2019-05-19 allows remote attackers to read the CSRF token from client-side scripts. The Django setting in src/nsupdate/settings/base.py sets CSRF_COOKIE_HTTPONLY to False, so browsers expose the csrftoken cookie to JavaScript. Exploitation requires script execution in the cookie origin and discloses the CSRF token without granting direct access to session cookies or server data.

CVSS severity5.3
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive cookie exposure in nsupdate.info before 2019-05-19 allows remote attackers to read the CSRF token from client-side scripts. The Django setting in src/nsupdate/settings/base.py sets CSRF_COOKIE_HTTPONLY to False, so browsers expose the csrftoken cookie to JavaScript. Exploitation requires script execution in the cookie origin and discloses the CSRF token without granting direct access to session cookies or server data.

The record

CVE
CVE-2019-25091
Published
Dec 27, 2022
Updated
Aug 5, 2024
Vendor
nsupdate.info
Product
nsupdate.info
Classifications
CWE-1004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 27, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

nsupdate.info · nsupdate.infoversion=n/a

Published CVSS scores

3.7VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-1004Sensitive Cookie Without 'HttpOnly' Flag

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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