CVE-2026-72709Network attack vector

Account takeover via unchecked administrative action authorization

Published Sep 11, 2026 · Updated Sep 15, 2026

Missing authorization in SPIP before 4.4.18 allows remote attackers to reset any account password through administrative action endpoints. The ecrire/action/ endpoints accept an HMAC-SHA256 nonce generated for the anonymous user and invoke editer_auteur without an autoriser() permission check. No credentials or user interaction are required; a direct HTTP request can rewrite an administrator password and enable full account takeover.

CVSS severity9.3
Critical
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in SPIP before 4.4.18 allows remote attackers to reset any account password through administrative action endpoints. The ecrire/action/ endpoints accept an HMAC-SHA256 nonce generated for the anonymous user and invoke editer_auteur without an autoriser() permission check. No credentials or user interaction are required; a direct HTTP request can rewrite an administrator password and enable full account takeover.

The record

CVE
CVE-2026-72709
Published
Sep 11, 2026
Updated
Sep 15, 2026
Vendor
SPIP
Product
SPIP
Classifications
CWE-862, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record 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=0 <4.4.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SPIP · SPIPversion=0 <4.4.18

Published CVSS scores

9.3VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheck CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1098Account Manipulation

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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