fix(security): add missing GitHub OAuth token patterns and snapshot redact flag

- Add gho_, ghu_, ghs_, ghr_ prefix patterns (OAuth, user-to-server,
  server-to-server, and refresh tokens) — all four types used by
  GitHub Apps and Copilot auth flows were absent from _PREFIX_PATTERNS
- Snapshot HERMES_REDACT_SECRETS at module import time instead of
  re-reading os.getenv() on every call, preventing runtime env mutations
  (e.g. LLM-generated export commands) from disabling redaction
This commit is contained in:
Dilee 2026-03-30 17:54:55 +03:00 committed by Teknium
parent 344239c2db
commit 6dcc3330b3

View file

@ -13,11 +13,19 @@ import re
logger = logging.getLogger(__name__)
# Snapshot at import time so runtime env mutations (e.g. LLM-generated
# `export HERMES_REDACT_SECRETS=false`) cannot disable redaction mid-session.
_REDACT_ENABLED = os.getenv("HERMES_REDACT_SECRETS", "").lower() not in ("0", "false", "no", "off")
# Known API key prefixes -- match the prefix + contiguous token chars
_PREFIX_PATTERNS = [
r"sk-[A-Za-z0-9_-]{10,}", # OpenAI / OpenRouter / Anthropic (sk-ant-*)
r"ghp_[A-Za-z0-9]{10,}", # GitHub PAT (classic)
r"github_pat_[A-Za-z0-9_]{10,}", # GitHub PAT (fine-grained)
r"gho_[A-Za-z0-9]{10,}", # GitHub OAuth access token
r"ghu_[A-Za-z0-9]{10,}", # GitHub user-to-server token
r"ghs_[A-Za-z0-9]{10,}", # GitHub server-to-server token
r"ghr_[A-Za-z0-9]{10,}", # GitHub refresh token
r"xox[baprs]-[A-Za-z0-9-]{10,}", # Slack tokens
r"AIza[A-Za-z0-9_-]{30,}", # Google API keys
r"pplx-[A-Za-z0-9]{10,}", # Perplexity
@ -109,7 +117,7 @@ def redact_sensitive_text(text: str) -> str:
text = str(text)
if not text:
return text
if os.getenv("HERMES_REDACT_SECRETS", "").lower() in ("0", "false", "no", "off"):
if not _REDACT_ENABLED:
return text
# Known prefixes (sk-, ghp_, etc.)