135 lines
6.0 KiB
JSON
135 lines
6.0 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-97688",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-09-24T21:43:37.208Z",
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"datePublished": "2026-09-29T15:32:17.622Z",
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"dateUpdated": "2026-09-29T15:42:34.502Z"
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},
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"containers": {
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"cna": {
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"title": "urllib3: Chunked Deflate streaming can enter an infinite loop",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-835",
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"lang": "en",
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"description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "LOW",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 6.9,
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"baseSeverity": "MEDIUM",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g"
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},
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{
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"name": "https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/urllib3/urllib3/commit/ea2ad7b21a80da3632f80016526a18864586077f"
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},
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{
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"name": "https://github.com/urllib3/urllib3/releases/tag/2.8.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/urllib3/urllib3/releases/tag/2.8.0"
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}
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],
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"affected": [
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{
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"vendor": "urllib3",
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"product": "urllib3",
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"versions": [
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{
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"version": ">= 2.6.2, < 2.8.0",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-09-29T15:32:17.622Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "urllib3 is an HTTP client library for Python. From 2.6.2 until 2.8.0, HTTPResponse.stream and HTTPResponse.read_chunked can enter an infinite loop because the Deflate decoder retains trailing bytes as unconsumed input after reaching end-of-stream and repeatedly decodes them without progress. The issue occurs when an untrusted server sends a chunked Deflate response whose decoded body exceeds a positive finite chunk size and whose encoded body has trailing bytes, specifically a response with Transfer-Encoding: chunked and Content-Encoding: deflate, content decoding enabled, and the positive finite amt=N streaming chunk size. The attack mechanism is that a malicious server returns a compressed chunked response with trailing bytes after the Deflate stream. The impact is excessive CPU usage and a request that does not complete, and network read timeouts do not interrupt the loop because no further socket read occurs. This issue is fixed in version 2.8.0."
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}
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],
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"source": {
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"advisory": "GHSA-gh4c-6fx4-qh6g",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-29T15:42:28.931695Z",
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"id": "CVE-2026-97688",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-29T15:42:34.502Z"
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}
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}
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]
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}
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} |