Bug#1109340: cpp-httplib: CVE-2025-52887 CVE-2025-53628 CVE-2025-53629

[Bastian Germann]

Control: found -1 0.18.7-1

This is not specific to 0.21. Adding the test to 0.18.7, it fails:

[ RUN      ] ServerTest.HeaderCountExceedsLimit
../test/test.cc:3709: Failure
Expected equality of these values:
  StatusCode::BadRequest_400
    Which is: 400
  res->status
    Which is: 200

[  FAILED  ] ServerTest.HeaderCountExceedsLimit (148 ms)
[ ... ]
[ RUN      ] ServerTest.HeaderCountSecurityTest
../test/test.cc:3772: Failure
Expected equality of these values:
  StatusCode::BadRequest_400
    Which is: 400
  res->status
    Which is: 404

[  FAILED  ] ServerTest.HeaderCountSecurityTest (147 ms)