CVE-2026-82911Network attack vector

Unauthorized order confirmation via state-changing GET request

Published Sep 4, 2026 · Updated Sep 4, 2026

Cross-site request forgery in Roskus Prospero Flow CRM before 5.15.11 allows remote attackers to confirm orders through a crafted link. The GET /order/confirm/{order_number} route invokes OrderConfirmController::confirm() without CSRF-token validation, while SameSite=Lax cookies accompany top-level navigation. An authenticated user must click the link; sequential order numbers let the attacker change pending orders to confirmed without authorization.

CVSS severity5.1
Medium
EPSS probability0.16%
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 Roskus Prospero Flow CRM before 5.15.11 allows remote attackers to confirm orders through a crafted link. The GET /order/confirm/{order_number} route invokes OrderConfirmController::confirm() without CSRF-token validation, while SameSite=Lax cookies accompany top-level navigation. An authenticated user must click the link; sequential order numbers let the attacker change pending orders to confirmed without authorization.

The record

CVE
CVE-2026-82911
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
Roskus
Product
Prospero Flow CRM
Classifications
CWE-352, CAPEC-62, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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 <5.15.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Roskus · Prospero Flow CRMversion=0 <5.15.11

Published CVSS scores

5.1Secur0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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-352Cross-Site Request Forgery (CSRF)
CAPEC-62Cross-Site Request Forgery
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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