Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h

FINAL RESULTS:

data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7084:14:  [4] (format) vsnprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
    retval = vsnprintf(buffer, len, format, ap);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7086:14:  [4] (format) vsprintf:
  Potential format string problem (CWE-134). Make format string constant.
    retval = vsprintf(buffer, format, ap);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7115:5:  [4] (format) vsprintf:
  Potential format string problem (CWE-134). Make format string constant.
    vsprintf(buffer, pat, args);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:4025:42:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
#  define CopyD(s,d,n,t)                 memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:6939:38:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
                && (xdigit = strchr((char *) PL_hexdigit, s[1])))
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7161:9:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
        memcpy(dst + used, src, copy);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7190:9:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
        memcpy(dst, src, copy);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7282:5:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
    char octbuf[32] = "%123456789ABCDF";
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7352:13:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
            char tmp[2];
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5529:24:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5537:59:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
#  define sv_vcatpvf(sv, pat, args)  sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*))
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5541:59:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
#  define sv_vsetpvf(sv, pat, args)  sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*))
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5561:24:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5589:24:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  sv_vcatpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5610:27:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
     sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));  \
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5632:24:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5660:24:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  sv_vsetpvfn(sv, pat, strlen(pat), &args, Null(SV**), 0, Null(bool*));
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5681:27:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
     sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));  \
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:5735:65:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
#  define HvNAMELEN_get(hv)              (HvNAME_get(hv) ? (I32)strlen(HvNAME_get(hv)) : 0)
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:6533:22:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
        STRLEN len = strlen(radix);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7117:12:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    return strlen(buffer);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7157:12:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    used = strlen(dst);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7158:14:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    length = strlen(src);
data/libwww-form-urlencoded-xs-perl-0.26/lib/WWW/Form/UrlEncoded/ppport.h:7187:14:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    length = strlen(src);

ANALYSIS SUMMARY:

Hits = 24
Lines analyzed = 7452 in approximately 0.23 seconds (32155 lines/second)
Physical Source Lines of Code (SLOC) = 3132
Hits@level = [0]   0 [1]  15 [2]   6 [3]   0 [4]   3 [5]   0
Hits@level+ = [0+]  24 [1+]  24 [2+]   9 [3+]   3 [4+]   3 [5+]   0
Hits/KSLOC@level+ = [0+] 7.66284 [1+] 7.66284 [2+] 2.87356 [3+] 0.957854 [4+] 0.957854 [5+]   0
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.