CVE-2026-78397Network attack vector

Unauthenticated SSRF via unsafe reciprocal-link fallback

Published Sep 25, 2026 · Updated Sep 25, 2026

SSRF in Community Events Project Link Library 7.8.8 through 7.9.5 allows remote attackers to probe internal services via submitted URLs. Reciprocal-link validation retries a rejected safe request with an unprotected fetch, so the supplied destination is contacted without an internal-host restriction. The site must publish the public link-submission form and enable reciprocal-link validation; response differences reveal whether an internal service answered.

CVSS severityUnavailable
Unscored
EPSS probability0.16%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Community Events Project Link Library 7.8.8 through 7.9.5 allows remote attackers to probe internal services via submitted URLs. Reciprocal-link validation retries a rejected safe request with an unprotected fetch, so the supplied destination is contacted without an internal-host restriction. The site must publish the public link-submission form and enable reciprocal-link validation; response differences reveal whether an internal service answered.

The record

CVE
CVE-2026-78397
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
Community Events Project
Product
Link Library
Classifications
T1046
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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=7.8.8 <7.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Community Events Project · Link Libraryversion=7.8.8 <7.9.6

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1046Network Service Discovery

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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