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Issue title

Weak Crypto

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Top 5 (default)
Severity Rule Title File:line
HIGH SEC029 [SEC029] Server-Side Request Forgery (SSRF) — outbound HTTP from user input: Outbound HTT… src/core/ngx_syslog.c:130
HIGH SEC029 [SEC029] Server-Side Request Forgery (SSRF) — outbound HTTP from user input: Outbound HTT… src/core/ngx_string.h:190
HIGH SEC029 [SEC029] Server-Side Request Forgery (SSRF) — outbound HTTP from user input: Outbound HTT… src/core/ngx_inet.h:123
HIGH MINED004 [MINED004] Weak Crypto: MD5/SHA1/DES/RC4 used for security context (not just checksums). src/mail/ngx_mail_imap_module.c:31
HIGH MINED004 [MINED004] Weak Crypto: MD5/SHA1/DES/RC4 used for security context (not just checksums). src/http/modules/ngx_http_secure_link_m…:16
HIGH MINED004 [MINED004] Weak Crypto: MD5/SHA1/DES/RC4 used for security context (not just checksums). src/core/ngx_crypt.c:58
HIGH MINED115 Action `nginx/ci-self-hosted/.github/workflows/nginx-buildbot.yml` pinned to mutable ref … .github/workflows/buildbot.yml:11
HIGH MINED115 Action `nginx/ci-self-hosted/.github/workflows/nginx-check-pr.yml` pinned to mutable ref … .github/workflows/check-pr.yml:8
HIGH SEC013 [SEC013] Path Traversal — User Input in File Path: User-controlled input used in file pat… src/http/ngx_http_cache.h:193
HIGH CORE_NO_TESTS No test files found —
MED SEC045 [SEC045] eval()/exec() on stored or user-supplied data: eval() and exec() on data — even … src/stream/ngx_stream_variables.h:84
MED SEC045 [SEC045] eval()/exec() on stored or user-supplied data: eval() and exec() on data — even … src/http/ngx_http_variables.h:88
MED SEC045 [SEC045] eval()/exec() on stored or user-supplied data: eval() and exec() on data — even … src/core/ngx_regex.h:64
MED CORE_LARGE_FILES Average file size is 624 lines (recommend <300) —
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_tunnel_module…:270
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_try_files_mod…:141
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_sub_filter_mo…:102
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_static_module…:144
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_static_module…:55
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_split_clients…:90
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_range_filter_…:64
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_range_filter_…:63
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_random_index_…:76
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_not_modified_…:19
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_limit_req_mod…:483
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_limit_req_mod…:268
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_limit_req_mod…:267
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_limit_conn_mo…:231
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_headers_filte…:127
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_gzip_static_m…:90
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_gzip_filter_m…:528
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_gunzip_filter…:68
LOW AIC003 Duplicated implementation block across source files src/http/modules/ngx_http_chunked_filte…:22
LOW AIC003 Duplicated implementation block across source files src/event/quic/ngx_event_quic_udp.c:24
LOW AIC003 Duplicated implementation block across source files src/event/quic/ngx_event_quic_udp.c:9
LOW AIC003 Duplicated implementation block across source files src/event/ngx_event_udp.c:271
LOW AIC003 Duplicated implementation block across source files src/event/ngx_event_udp.c:26
LOW AIC003 Duplicated implementation block across source files src/event/ngx_event_acceptex.c:141
LOW AIC003 Duplicated implementation block across source files src/event/modules/ngx_win32_select_modu…:41
LOW AIC003 Duplicated implementation block across source files src/event/modules/ngx_win32_select_modu…:1
LOW AIC003 Duplicated implementation block across source files src/event/modules/ngx_win32_poll_module…:12
LOW AIC003 Duplicated implementation block across source files src/event/modules/ngx_select_module.c:39
LOW AIC003 Duplicated implementation block across source files src/event/modules/ngx_epoll_module.c:498
LOW AIC003 Duplicated implementation block across source files src/core/ngx_sha1.c:15
INFO MINED075 [MINED075] C Malloc No Check: malloc/calloc/realloc return value used without checking fo… src/os/win32/ngx_alloc.c:21
INFO MINED075 [MINED075] C Malloc No Check: malloc/calloc/realloc return value used without checking fo… src/os/unix/ngx_errno.c:175
INFO MINED075 [MINED075] C Malloc No Check: malloc/calloc/realloc return value used without checking fo… src/os/unix/ngx_alloc.c:22
Reset to top 5 47 findings available (after auto-suppression of test files + won't-fix)

Issue body (markdown)

## Code-quality scan: `nginx/nginx`

**Score: 82/100 (C)**  ·  47 findings  ·  scanned 2026-05-20 15:23 UTC  ·  248,809 LOC

| Severity | Count |
|---|---|
| CRITICAL | 0 |
| HIGH | 10 |
| MEDIUM | 4 |
| LOW | 30 |

📊 [Full filterable report](https://www.repobility.com/scan/9f08cd24-08f7-4a0a-8ed3-f69967e24690/)  ·  ![scorecard](https://www.repobility.com/scan/9f08cd24-08f7-4a0a-8ed3-f69967e24690/report.png?v=1779290589-s2)

### Top findings

1. **HIGH** `SEC029` — Server-Side Request Forgery (SSRF) — outbound HTTP from user input
   `src/core/ngx_syslog.c:130` · A10:2021 SSRF
2. **HIGH** `SEC029` — Server-Side Request Forgery (SSRF) — outbound HTTP from user input
   `src/core/ngx_string.h:190` · A10:2021 SSRF
3. **HIGH** `SEC029` — Server-Side Request Forgery (SSRF) — outbound HTTP from user input
   `src/core/ngx_inet.h:123` · A10:2021 SSRF
4. **HIGH** `MINED004` — Weak Crypto
   `src/mail/ngx_mail_imap_module.c:31` · CWE-327 · ✓ Repobility
5. **HIGH** `MINED004` — Weak Crypto
   `src/http/modules/ngx_http_secure_link_module.c:16` · CWE-327 · ✓ Repobility

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**Security note**: this issue is public. If any flagged finding is a real, exploitable vulnerability, please redirect to your `SECURITY.md` policy or open a [private security advisory](https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing-information-about-vulnerabilities/privately-reporting-a-security-vulnerability) instead. We're happy to close this and re-submit privately.

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_Filed automatically. Close this issue if not useful — we won't refile. Full report: https://www.repobility.com/scan/9f08cd24-08f7-4a0a-8ed3-f69967e24690/_
Already filed
This repo publishes a SECURITY.md policy and the scan contains 4 Critical/High security finding(s). Public issue filing would violate coordinated disclosure. Submit privately via the project's security reporting channel.
Megaproject â high spam risk
Could not determine 'nginx/nginx' star count (GitHub API rate-limited or unreachable). When in doubt about repo size, prefer opening a focused PR or a discussion rather than an issue.
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