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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Root Cause**: The stopwatch API does not re-validate permissions.
💥 **Consequence**: Even after permission revocation, the **issue title** and **repository name** of private repositories can still be accessed via the…
🔍 **Flaw**: Missing API permission validation logic.
📉 **CWE**: Insufficient Authorization Check (Authorization Bypass).
⚠️ **Core Issue**: State does not synchronize in real-time with permission changes.
Q3Who is affected? (Versions/Components)
📦 **Component**: Gitea (a lightweight Git service based on Go).
📅 **Affected Versions**: All versions lower than **v1.25.4**.
Q4What can hackers do? (Privileges/Data)
🕵️ **Attacker Capability**: Information Disclosure.
📂 **Data Exposed**: **Name** and **Issue title** of private repositories.
🔓 **Access**: Bypasses access restrictions that have been 'revoked'.
Q5Is exploitation threshold high? (Auth/Config)
🚪 **Difficulty**: Medium.
🔑 **Prerequisite**: Must have had **prior access** to the repository (the stopwatch must have been initiated).
⏳ **Condition**: Exploit cache/state lag after permissions are revoked.
Q6Is there a public Exp? (PoC/Wild Exploitation)
🧪 **Exploit/PoC**: No public exploit available yet.
🌍 **Exploitation in the Wild**: Unknown.
📝 **Reference**: Official PRs #36340 and #36368 have fixed the issue.
Q7How to self-check? (Features/Scanning)
🔎 **Self-Check Method**:
1. Check if the Gitea version is < v1.25.4.
2. Audit the Timer API call logic.
3. Confirm whether the API immediately returns a 403 error after permission revocation.
Q8Is it fixed officially? (Patch/Mitigation)
✅ **Fixed**: Yes.
🛠️ **Patch**: Upgrade to **Gitea v1.25.4**.
📖 **Details**: See GitHub Security Advisory GHSA-644v-xv3j-xgqg.
Q9What if no patch? (Workaround)
🛡️ **Temporary Mitigation**:
1. Upgrade to v1.25.4 immediately.
2. If upgrading is not possible, monitor for abnormal access to the stopwatch API.
3. Regularly clean up invalid sessions and cache.
Q10Is it urgent? (Priority Suggestion)
⚡ **Priority**: High.
📉 **Risk**: Information Disclosure (not RCE).
🏃 **Recommendation**: Upgrade as soon as possible to prevent exposure of private project metadata.