{"items":[{"id":"NVI-00016098","kind":"vulnerability","title":"Gitea: Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6hm7-3pwj-22rm","CVE-2026-56755"],"plain_summary":"GitHub lists this reviewed advisory for code.gitea.io/gitea. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0194ea92afe8d7a89012d4b2008e8532"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.174%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.06928. Missing scores are unknown.","source_id":"sr-0194ea92afe8d7a89012d4b2008e8532"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fc0b938db37f562d5f2301a25a68637","url":"https://github.com/advisories/GHSA-6hm7-3pwj-22rm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6hm7-3pwj-22rm","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"},{"id":"sr-0194ea92afe8d7a89012d4b2008e8532","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-56755","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.388Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fc0b938db37f562d5f2301a25a68637"],"technology":"code.gitea.io/gitea","known_exclusions":[],"conditions_summary":"Gitea's Debian package registry parser contains an unbounded decompression vulnerability in ParseControlFile. When processing an uploaded `.deb` file, the parser decompresses `control.tar.gz` and copies the entire uncompressed stream into a `strings.Builder` via a `TeeReader`, with no limit on how much data is read. Because `DEFLATE` compression can achieve ratios exceeding 100:1 on repetitive input, an attacker can craft an 83 MB `.deb` payload that expands to over 16 GB during parsing, exhausting server memory before any content validation runs. A second issue compounds this: continuation lines in the Description field are concatenated with `+=` at modules/packages/debian/metadata.go:161 inside a loop, producing `O(N²)` allocation and copy work that stalls the CPU even at moderate line counts. Any authenticated user with write access to the package registry can trigger a complete denial of service with a single upload request to the han","public_affected_ranges":["< 1.27.0"]}],"null_published_at":"2026-11-07T07:07:42.515Z","source_updated_at":"2026-07-21T20:24:10.000Z","source_disclosed_at":"2026-07-21T20:24:09.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-03T22:34:39.734Z"},{"id":"NVI-00016098","kind":"vulnerability","title":"Gitea: Denial of Service (CPU & Memory Exhaustion) via O(N^2) String Concatenation in Debian Package Upload","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-6hm7-3pwj-22rm","CVE-2026-56755"],"plain_summary":"GitHub lists this reviewed advisory for code.gitea.io/gitea. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1fc0b938db37f562d5f2301a25a68637"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-1fc0b938db37f562d5f2301a25a68637","url":"https://github.com/advisories/GHSA-6hm7-3pwj-22rm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-6hm7-3pwj-22rm","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:39.734Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1fc0b938db37f562d5f2301a25a68637"],"technology":"code.gitea.io/gitea","known_exclusions":[],"conditions_summary":"Gitea's Debian package registry parser contains an unbounded decompression vulnerability in ParseControlFile. When processing an uploaded `.deb` file, the parser decompresses `control.tar.gz` and copies the entire uncompressed stream into a `strings.Builder` via a `TeeReader`, with no limit on how much data is read. Because `DEFLATE` compression can achieve ratios exceeding 100:1 on repetitive input, an attacker can craft an 83 MB `.deb` payload that expands to over 16 GB during parsing, exhausting server memory before any content validation runs. A second issue compounds this: continuation lines in the Description field are concatenated with `+=` at modules/packages/debian/metadata.go:161 inside a loop, producing `O(N²)` allocation and copy work that stalls the CPU even at moderate line counts. Any authenticated user with write access to the package registry can trigger a complete denial of service with a single upload request to the han","public_affected_ranges":["< 1.27.0"]}],"null_published_at":"2026-11-04T10:04:27.890Z","source_updated_at":"2026-07-21T20:24:10.000Z","source_disclosed_at":"2026-07-21T20:24:09.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T22:34:39.734Z"}],"next_cursor":null,"snapshot_revision":"44495"}