{"items":[{"id":"NVI-00013975","kind":"vulnerability","title":"httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-j5g9-f88f-gfj3","CVE-2026-59939"],"plain_summary":"GitHub lists this reviewed advisory for httplib2. 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-1dff73a61b499e640fc7acc261503051"],"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":"CVSS","as_of":"2026-08-20T21:31:16.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2aa39476107a1fd072a46daf7c7bd638"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.665%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.51848. Missing scores are unknown.","source_id":"sr-1dff73a61b499e640fc7acc261503051"}],"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-2aa39476107a1fd072a46daf7c7bd638","url":"https://github.com/advisories/GHSA-j5g9-f88f-gfj3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j5g9-f88f-gfj3","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:46.713Z"},{"id":"sr-1dff73a61b499e640fc7acc261503051","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-2026-59939","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.789Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2aa39476107a1fd072a46daf7c7bd638"],"technology":"httplib2","known_exclusions":[],"conditions_summary":"### Summary\n\nThe `httplib2` HTTP client library performs unbounded decompression of HTTP response bodies encoded with `Content-Encoding: gzip` or `deflate`. A malicious or compromised HTTP server can return a small compressed payload (approximately 150 KB) that expands to an arbitrarily large size in memory (150 MB or more), causing `MemoryError` or OOM-kill in the client process. This is a classic decompression bomb (zip bomb) attack against the HTTP client.\n\nAny application using `httplib2.Http().request()` against untrusted or attacker-controlled HTTP endpoints is affected.\n\n### Details\n\n**Affected code:** `httplib2/__init__.py` - `_decompressContent()` function\n\nThe decompression path has two unbounded operations:\n\n1. **gzip decompression** (line 394):\n   ```python\n   content = gzip.GzipFile(fileobj=io.BytesIO(new_content)).read()\n   ```\n   The `.read()` call with no size argument decompresses the entire gzip payload into a single in-memory bytes object. There is no limit on the decompressed size.\n\n2. **deflate decompression** (line 397):\n   ```python\n   content = zlib.decompress(content, zlib.MAX_WBITS)\n   ```\n   Similarly, `zlib.decompress()` returns the fully decompressed co","public_affected_ranges":["< 0.32.0"]}],"null_published_at":"2026-11-07T14:01:55.409Z","source_updated_at":"2026-08-20T21:31:16.000Z","source_disclosed_at":"2026-07-24T15:15:05.000Z","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":"2026-11-02T09:56:46.713Z"},{"id":"NVI-00013975","kind":"vulnerability","title":"httplib2: Decompression Bomb Denial of Service via Unbounded gzip/deflate Response Handling","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-j5g9-f88f-gfj3","CVE-2026-59939"],"plain_summary":"GitHub lists this reviewed advisory for httplib2. 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-2aa39476107a1fd072a46daf7c7bd638"],"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":"CVSS","as_of":"2026-08-20T21:31:16.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2aa39476107a1fd072a46daf7c7bd638"}],"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-2aa39476107a1fd072a46daf7c7bd638","url":"https://github.com/advisories/GHSA-j5g9-f88f-gfj3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-j5g9-f88f-gfj3","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T09:56:46.713Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2aa39476107a1fd072a46daf7c7bd638"],"technology":"httplib2","known_exclusions":[],"conditions_summary":"### Summary\n\nThe `httplib2` HTTP client library performs unbounded decompression of HTTP response bodies encoded with `Content-Encoding: gzip` or `deflate`. A malicious or compromised HTTP server can return a small compressed payload (approximately 150 KB) that expands to an arbitrarily large size in memory (150 MB or more), causing `MemoryError` or OOM-kill in the client process. This is a classic decompression bomb (zip bomb) attack against the HTTP client.\n\nAny application using `httplib2.Http().request()` against untrusted or attacker-controlled HTTP endpoints is affected.\n\n### Details\n\n**Affected code:** `httplib2/__init__.py` - `_decompressContent()` function\n\nThe decompression path has two unbounded operations:\n\n1. **gzip decompression** (line 394):\n   ```python\n   content = gzip.GzipFile(fileobj=io.BytesIO(new_content)).read()\n   ```\n   The `.read()` call with no size argument decompresses the entire gzip payload into a single in-memory bytes object. There is no limit on the decompressed size.\n\n2. **deflate decompression** (line 397):\n   ```python\n   content = zlib.decompress(content, zlib.MAX_WBITS)\n   ```\n   Similarly, `zlib.decompress()` returns the fully decompressed co","public_affected_ranges":["< 0.32.0"]}],"null_published_at":"2026-11-02T10:00:37.193Z","source_updated_at":"2026-08-20T21:31:16.000Z","source_disclosed_at":"2026-07-24T15:15:05.000Z","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":"2026-11-02T09:56:46.713Z"}],"next_cursor":null,"snapshot_revision":"42594"}