CVE-2024-11680 — ProjectSend Improper Authentication Vulnerability

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

• Documented patch — github.com (NIST National Vulnerability Database)
• Documented mitigation — www.synacktiv.com (NIST National Vulnerability Database)

CISA required action CISA

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

US federal deadline: Dec 24, 2024 — passed 661 day(s) ago

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

1. Identify exposed assets running the affected vendor/product/version combinations (Projectsend Projectsend).
2. Treat as emergency remediation: the CVE is in CISA KEV (confirmed exploitation).
3. The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
4. Apply the fixed version or the patch documented under Remediation.
5. EPSS ahead of 100% of scored CVEs: prioritize it in the patch queue.
6. Search available logs for exploit probes matching the vulnerability class (authentication), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-306 · Missing Authentication for Critical Function

Other CVEs with this weakness →

CISA KEV details CISA

CISA lists a CVE once it has evidence of exploitation against real targets.

CISA records ransomware use only for campaigns it has confirmed, so “Unknown” means unrecorded, not ruled out. The deadline binds US federal agencies; for everyone else it is a reference date.

Public exploits, PoCs and detection templates

Public code that demonstrates or tests the flaw raises the odds of mass exploitation — and Nuclei templates help find vulnerable assets in your environment.

Warning: public PoCs are sometimes disguised malware. Use them only for authorized testing in an isolated environment. This portal does not host exploit code — it only points to the sources.

EPSS over time FIRST

Oct 13, 2026 → Oct 14, 2026 · 2 reading(s) · max 91.85%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

• Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
• Review authentication logs: logins without MFA, anomalous sessions and recently created accounts.
• Hunt retroactively in logs from before Dec 3, 2024 (KEV listing): exploitation may have started earlier.

Timeline

What happened to this CVE, newest first.

• 2026
• Affected products added · projectsend/projectsend
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• SSVC assessment updated
  Oct 13, 2026 · CVE Program (cve.org) e CISA ADP
• Record published
  Oct 13, 2026
• Fix documented
  Oct 13, 2026 · NIST National Vulnerability Database
• Affected products added · projectsend/projectsend
  Oct 13, 2026 · NIST National Vulnerability Database
• CVSS changed · 9.8
  Oct 13, 2026 · NIST National Vulnerability Database
• Source status changed · → Analyzed
  Oct 13, 2026 · NIST National Vulnerability Database
• Added to CISA KEV (detected)
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• Record created in this database
  Oct 13, 2026 · CISA Known Exploited Vulnerabilities
• 2024
• Added to CISA KEV catalog
  Dec 2, 2024 · CISA
• CVE published
  Nov 26, 2024 · VulnCheck

Source activity

Repeated readings are counted rather than listed.

• 2× References added · Oct 13, 2026 – Oct 13, 2026
• 1× Official description updated · Oct 13, 2026 – Oct 13, 2026

References

8 on the record

• github.com/projectsend/projectsend/commit/193367d937b1a59ed5b68dd4e60bd533174737
  Patch, patch, NIST National Vulnerability Database
• www.synacktiv.com/sites/default/files/2024-07/synacktiv-projectsend-multiple-vulnerabil
  Mitigation, Technical Description, Third Party Advisory, third-party-advisory, exploit, NIST National Vulnerability Database
• www.cisa.gov/known-exploited-vulnerabilities-catalog
  US Government Resource, NIST National Vulnerability Database
• github.com/advisories/GHSA-755x-386x-p26p
  GitHub Security Advisories
• nvd.nist.gov/vuln/detail/CVE-2024-11680
  GitHub Security Advisories
• github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/p
  Exploit, exploit, NIST National Vulnerability Database
• vulncheck.com/advisories/projectsend-bypass
  Third Party Advisory, third-party-advisory, NIST National Vulnerability Database
• github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/proj
  Broken Link, Third Party Advisory, exploit, NIST National Vulnerability Database

Elsewhere on this site

Related CVEs (same products)

• Medium CVE-2026-53992 Reflected XSS in ProjectSend thumbnails-regenerate.php via start_date / end_date Parameters Aug 5, 2026
• Medium CVE-2021-47947 Projectsend r1295 Stored Cross-Site Scripting via files-edit.php May 10, 2026
• Critical CVE-2023-53980 ProjectSend r1605 Remote Code Execution via File Extension Manipulation Dec 22, 2025
• High CVE-2023-53930 ProjectSend r1605 Insecure Direct Object Reference File Download Vulnerability Dec 17, 2025
• High CVE-2023-53905 ProjectSend r1605 CSV Injection via User Account Export Functionality Dec 17, 2025
• Medium CVE-2023-53906 ProjectSend r1605 Stored Cross-Site Scripting via Custom Assets Page Dec 17, 2025

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

• No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
• No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
• No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2024-11680 is "ProjectSend Improper Authentication Vulnerability", rated Critical. It affects Projectsend (Projectsend); versions are in the scope table. It is in CISA KEV: there is evidence of real-world exploitation. CVSS 9.8 describes technical severity. EPSS 91.85% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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