CVE-2022-36087

MEDIUMNVD 5.75.7—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.7 under NVD CVSS v3. EPSS exploit probability: 1.7% (75th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Elevated
5.7EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 1.7%CVSS: 5.7Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing malicious redirect uri can cause denial of service. An attacker can also leverage usage of uri_validate functions depending where it is used. OAuthLib applications using OAuth2.0 provider support or use directly uri_validate are affected by this issue. Version 3.2.1 contains a patch. There are no known workarounds.

CVSS v3
5.7
EG Score
5.7MEDIUMmedium confidence
EG Risk
42
EG Risk 42/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity57% × 45%
The EG Score, 5.7 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
1.7%
EPSS %ILE
76th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

Published

September 9, 2022

Last Modified

November 21, 2024

References (9)

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3-oauthlib (3.2.0-1ubuntu0.1) @ jammy2026-05-25ubuntu
redhatfence-agents-0:4.10.0-43.el92023-05-09redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
python-oauthlib—
  • every version up to 3.2.1-1: fixed in 3.2.1-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
python-oauthlib—
  • every version up to 3.2.1-1: fixed in 3.2.1-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
python-oauthlib—
  • every version up to 3.2.1-1: fixed in 3.2.1-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
oauthlib3.1.1, 3.2.0
  • 3.1.1 up to 3.2.2: fixed in 3.2.2
  • 3.1.1 up to 3.2.1: fixed in 3.2.1
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(2)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 8× in last 7d / 25× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 87 of 178 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 13 repeat rows among the latest 100 are merged into the row they repeat. The 91 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 13:44 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  2. 2026-10-10 19:56 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  3. 2026-10-09 20:04 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  4. 2026-10-08 16:40 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  5. 2026-10-07 23:45 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  6. 2026-10-06 15:14 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  7. 2026-10-05 17:40 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  8. 2026-10-04 23:19 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  9. 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.7% · 76th percentile
  10. 2026-10-02 16:23 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  11. 2026-10-01 19:47 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  12. 2026-09-30 15:59 UTCEG score recompute
  13. 2026-09-30 15:00 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  14. 2026-09-29 15:16 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  15. 2026-09-27 13:42 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  16. 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  17. 2026-09-24 14:00 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  18. 2026-09-24 11:37 UTCOSV refresh
  19. 2026-09-22 14:45 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  20. 2026-09-20 20:13 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  21. 2026-09-19 15:38 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  22. 2026-09-17 19:24 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  23. 2026-09-16 14:05 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  24. 2026-09-15 03:07 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  25. 2026-09-12 14:57 UTCEPSS rescoreEPSS 1.7% · 75th percentile
Show 62 more
  1. 2026-09-11 14:50 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  2. 2026-09-11 09:33 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  3. 2026-09-08 21:57 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  4. 2026-09-07 15:58 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  5. 2026-09-06 13:45 UTCEPSS rescoreEPSS 1.7% · 75th percentile
  6. 2026-09-05 15:25 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  7. 2026-09-05 04:18 UTCOSV refresh
  8. 2026-09-04 13:57 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  9. 2026-09-04 05:04 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  10. 2026-09-02 14:09 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  11. 2026-09-01 13:51 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  12. 2026-08-30 19:14 UTCEPSS rescoreEPSS 1.3% · 69th percentile
  13. 2026-08-30 01:19 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  14. 2026-08-28 21:38 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  15. 2026-08-27 14:22 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  16. 2026-08-26 14:43 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  17. 2026-08-25 13:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  18. 2026-08-24 14:13 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  19. 2026-08-23 00:17 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  20. 2026-08-21 23:46 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  21. 2026-08-20 22:52 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  22. 2026-08-19 17:01 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  23. 2026-08-18 14:58 UTCOSV refresh
  24. 2026-08-18 13:45 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  25. 2026-08-17 13:44 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  26. 2026-08-16 14:53 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  27. 2026-08-16 02:11 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  28. 2026-08-15 01:27 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  29. 2026-08-13 21:58 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  30. 2026-08-12 13:48 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  31. 2026-08-11 13:39 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  32. 2026-08-10 14:08 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  33. 2026-08-09 13:44 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  34. 2026-08-08 16:34 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  35. 2026-08-07 16:24 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  36. 2026-08-06 13:44 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  37. 2026-08-05 19:15 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  38. 2026-08-04 15:07 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  39. 2026-08-04 10:35 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  40. 2026-08-03 10:57 UTCOSV refresh
  41. 2026-08-02 02:24 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  42. 2026-08-01 04:13 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  43. 2026-07-30 16:25 UTCEPSS rescoreEPSS 1.3% · 68th percentile
  44. 2026-07-30 01:28 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  45. 2026-07-28 15:33 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  46. 2026-07-26 14:52 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  47. 2026-07-25 14:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  48. 2026-07-24 14:15 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  49. 2026-07-23 14:16 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  50. 2026-07-23 02:12 UTCEG score recompute
  51. 2026-07-22 22:59 UTCEG score recompute
  52. 2026-07-22 14:06 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  53. 2026-07-21 15:22 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  54. 2026-07-20 17:05 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  55. 2026-07-19 14:29 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  56. 2026-07-19 02:27 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  57. 2026-07-18 10:03 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  58. 2026-07-16 20:20 UTCOSV refresh
  59. 2026-07-16 17:00 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  60. 2026-07-15 16:56 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  61. 2026-07-15 01:58 UTCEPSS rescoreEPSS 1.3% · 67th percentile
  62. 2026-07-13 22:28 UTCEPSS rescoreEPSS 1.3% · 67th percentile

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Frequently asked(5)

What is CVE-2022-36087?
CVE-2022-36087 is a medium-severity vulnerability; its CVE record was published on September 9, 2022. OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing malicious redirect uri can cause denial of service. An attacker can also leverage usage of urivalidate functions depending where it is used. OAuthLib…
When was the CVE record for CVE-2022-36087 published?
The CVE record for CVE-2022-36087 was published on September 9, 2022. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2022-36087 actively exploited?
CVE-2022-36087 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.7% probability of exploitation in the next 30 days (76th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-36087?
CVE-2022-36087 has a CVSS v3 base score of 5.7 (NVD).
How do I remediate CVE-2022-36087?
A fix for CVE-2022-36087 is available: update to the fixed version the vendor names in its advisory.

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