CVE-2026-87802Disclosure

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper verification of cryptographic signature vulnerability in Apache Syncope. When SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-347

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked 1d ago at 2 mentions (2026-09-15); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-09-15: 2Mentions · 2026-09-16: 1Technical Details · 2026-09-15: 2Technical Details · 2026-09-16: 109-1509-16
Signal classification1 categories
Disclosure
3100.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-09-152
Disclosure2
2026-09-161
Disclosure1
Full discourse3 posts
  • Cyber Threat Observatory | Alan Turing Institute@TuringCyberObs
    Disclosure

    CVE-2026-87802 Apache Syncope SRA JWT verification flaws could allow forged tokens and access to services proxied by Secure Remote Access Full analysis: https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-09-14/TIER_2_CVE-2026-87802.md #CyberSecurity #IdentitySecurity #VulnerabilityManagement

    Post summary

    The post discloses CVE-2026-87802 affecting Apache Syncope SRA and summarizes the technical issue as JWT verification flaws enabling forged tokens and unauthorized access. It links to a full analysis but does not mention a PoC, exploit tool, active exploitation, or remediation.

    0002047
    62 followersView on X
  • Cybersecurity News DE@cybsecuritynews
    Disclosure

    Updated Post: Apache Syncope: Kritische Lücken erlauben Kontoübernahme per JWT-Fälschung https://cybersecurity-news.de/apache-syncope-kritische-luecken-jwt-faelschung-cve-2026-87785-cve-2026-87802

    Post summary

    The tweet announces critical Apache Syncope vulnerabilities (CVE‑2026‑87785, CVE‑2026‑87802) that enable account takeover via JWT forgery, detailing the technical nature of the flaws without indicating a PoC, exploit tool, active exploitation, or patch.

    0000045
    12 followersView on X
  • Cybersecurity News DE@cybsecuritynews
    Disclosure

    #schwachstellen Apache Syncope: Kritische Lücken erlauben Kontoübernahme per JWT-Fälschung #apachesyncope #cve202682232 #cve202686460 #cve202687785 #cve202687802 #jwt #oauth20 #sra https://cybersecurity-news.de/apache-syncope-kritische-luecken-jwt-faelschung-cve-2026-87785-cve-2026-87802

    Post summary

    The tweet discloses critical vulnerabilities in Apache Syncope (CVE-2026-82232, CVE-2026-86460, CVE-2026-87785, CVE-2026-87802) that enable account takeover via JWT forgery, linking to a news article for further details.

    0000043
    12 followersView on X

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