CVE-2023-32681

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 6.1%, top 9% of all CVEs by exploit prediction. 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: NVD CVSS baseline
Sources: epss, nvd
Elevated
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 3%CVSS: 6.1Exploit: NoneExposed: 0

A fix is available — apply it.

Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to destination servers when redirected to an HTTPS endpoint. This is a product of how we use rebuild_proxies to reattach the Proxy-Authorization header to requests. For HTTP connections sent through the tunnel, the proxy will identify the header in the request itself and remove it prior to forwarding to the destination server. However when sent over HTTPS, the Proxy-Authorization header must be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
85.7%
KEV
Not listed

Published

May 26, 2023

Last Modified

February 13, 2025

References (14)

Vendor Advisories for CVE-2023-32681(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(13)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntupython-requests-doc (2.28.1+dfsg-1ubuntu1.1) @ lunar2026-05-25ubuntu
ubuntupython3-requests (2.2.1-1ubuntu0.4+esm1) @ trusty2026-05-25ubuntu
ubuntupython3-pip-whl (25.0+dfsg-1ubuntu0.2) @ plucky2026-05-25ubuntu
ubuntupython-requests (2.18.4-2ubuntu0.1+esm1) @ bionic2026-05-25ubuntu
redhatpython-requests-0:2.20.0-3.el8_62024-01-18redhat
redhatpython39-devel:3.9-8090020230922213827.7484f1d12023-11-14redhat
redhatpython38-devel:3.8-8090020230810143931.d9f72c262023-11-14redhat
redhatpython27:2.7-8090020231003120724.449e760b2023-11-14redhat
redhatpython-requests-0:2.31.0-1.el8pc2023-11-08redhat
redhatrh-python38-python-requests-0:2.22.0-11.el72023-11-08redhat
redhatpython3x-requests-0:2.31.0-1.el8ap2023-08-21redhat
redhatpython-requests-0:2.20.0-3.el8_82023-08-08redhat
redhatpython-requests-0:2.25.1-7.el9_22023-08-01redhat

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

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
requests2.10.0 ... 2.9.2 (66 versions)2.31.0—

Weakness Classification(1)

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

Additional Vendor Advisories

(12)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 9× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-07-11 08:26 UTCEPSS rescore
  2. 2026-07-11 08:25 UTCEPSS rescore
  3. 2026-07-09 19:08 UTCEPSS rescore
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  14. 2026-06-30 23:21 UTCEPSS rescore
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  16. 2026-06-29 14:05 UTCEPSS rescore
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  18. 2026-06-28 14:06 UTCEPSS rescore
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  20. 2026-06-28 04:55 UTCEPSS rescore
  21. 2026-06-28 04:55 UTCEPSS rescore
  22. 2026-06-27 20:04 UTCOSV refresh
  23. 2026-06-27 03:07 UTCEPSS rescore
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  25. 2026-06-25 13:48 UTCEPSS rescore
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  1. 2026-06-25 13:48 UTCEPSS rescore
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  4. 2026-06-23 21:31 UTCEPSS rescore
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  6. 2026-06-22 14:24 UTCEPSS rescore
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  8. 2026-06-21 14:55 UTCEPSS rescore
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  10. 2026-06-19 19:24 UTCEPSS rescore
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  12. 2026-06-18 17:51 UTCEPSS rescore
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  20. 2026-06-13 22:59 UTCEPSS rescore
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  22. 2026-06-12 23:10 UTCEPSS rescore
  23. 2026-06-12 23:10 UTCEPSS rescore
  24. 2026-06-11 13:59 UTCEPSS rescore
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  26. 2026-06-10 22:17 UTCEPSS rescore
  27. 2026-06-10 13:21 UTCEPSS rescore
  28. 2026-06-10 06:47 UTCOSV refresh
  29. 2026-06-08 14:16 UTCEPSS rescore
  30. 2026-06-08 14:15 UTCEPSS rescore
  31. 2026-06-07 15:23 UTCEPSS rescore
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  33. 2026-06-05 22:46 UTCEPSS rescore
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  35. 2026-06-05 06:09 UTCEPSS rescore
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  37. 2026-06-04 13:11 UTCEPSS rescore
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  39. 2026-06-02 20:12 UTCEPSS rescore
  40. 2026-06-02 20:12 UTCEPSS rescore
  41. 2026-06-02 20:12 UTCEPSS rescore
  42. 2026-06-01 13:51 UTCEPSS rescore
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  44. 2026-05-31 22:30 UTCEPSS rescore
  45. 2026-05-31 22:29 UTCEPSS rescore
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  47. 2026-05-31 00:15 UTCEPSS rescore
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  49. 2026-05-29 13:43 UTCEPSS rescore
  50. 2026-05-29 13:43 UTCEPSS rescore
  51. 2026-05-28 13:43 UTCEPSS rescore
  52. 2026-05-28 13:43 UTCEPSS rescore
  53. 2026-05-27 13:39 UTCEPSS rescore
  54. 2026-05-26 13:43 UTCEPSS rescore
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  56. 2026-05-26 07:18 UTCEPSS rescore
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  58. 2026-05-26 07:18 UTCEPSS rescore
  59. 2026-05-25 00:32 UTCEG score recompute
  60. 2026-05-25 00:32 UTCVendor advisory
  61. 2026-05-24 16:52 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoChardikmodha/POC-CVE-2023-32681
    First seen Jul 22, 2023

    POC for the CVE-2023-32681

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-32681?
CVE-2023-32681 is a medium vulnerability published on May 26, 2023. Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to destination servers when redirected to an HTTPS endpoint. This is a product of how we use rebuild_proxies to reattach the Proxy-Authorization header to requests. For HTTP connections sent…
When was CVE-2023-32681 disclosed?
CVE-2023-32681 was first published in the National Vulnerability Database on May 26, 2023, with the most recent update on February 13, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-32681 actively exploited?
CVE-2023-32681 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-32681?
CVE-2023-32681 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2023-32681?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-32681, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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