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Actively exploited

CVE-2024-11680 ProjectSend Improper Authentication Vulnerability

ProjectSend contains an improper authentication vulnerability that allows a remote, unauthenticated attacker to enable unauthorized modification of the application's configuration via crafted HTTP requests to options.php. Successful exploitation allows attackers to create accounts, upload webshells, and embed malicious JavaScript.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 3 Dec 2024.
  • Rated Critical severity (CVSS 9.8, scored by Vendor).
  • It has been in the catalogue for 703 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It Is

ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Remote, unauthenticated attackers can exploit this flaw by sending crafted HTTP requests to options.php, enabling unauthorized modification of the application's configuration. Successful exploitation allows attackers to create accounts, upload webshells, and embed malicious JavaScript.

Affected Versions

ProductVersions
ProjectSend ProjectSendbefore r1720

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for ProjectSend. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 24 Dec 2024 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2024-11680
  3. CVE record: CVE-2024-11680
  4. FIRST EPSS
  5. github.com/projectsend/projectsend/commit/193367d937b1a59ed5b68dd4e60bd53317473744
  6. synacktiv.com/sites/default/files/2024-07/synacktiv-projectsend-multiple-vulnerabilities.pdf
  7. github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/projectsend_unauth_rc
  8. github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/projectsend-auth-bypass.
  9. vulncheck.com/advisories/projectsend-bypass