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Fencer Vulns
high 7.7

CVE-2017-7566 json

MyBB before 1.8.11 allows remote attackers to bypass an SSRF protection mechanism.

published 2017-04-06 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16571

cvss
7.7
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

MyBB before 1.8.11 allows remote attackers to bypass an SSRF protection mechanism.

Patch / fix

Exploit prediction

2.17% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sec-consult.com https://www.sec-consult.com/fxdata/seccons/prod/temedia/advisories_txt/20170407-0_MyBB_SSRF_vulnerability_v10.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.7 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N

Classification

Weakness
  • CWE-918 Server-Side Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.