python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.
CVE-2026-69249
“—” beside the score: it is equal to the CVSS score beside it.
This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (17th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-52450 (ENISA EUVD) · GHSA-jwv3-5hgf-82ww (GitHub Security Advisories)Source: ENISA EUVD
- CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
A fix is available — apply it.
- CVSS v3
- 8.7
- EG Score
- 8.7HIGHmedium confidence
- EG Risk
- 70EG Risk 70/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity87% × 45%Impact severity (EG Severity): CVSS 8.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation40% × 40%EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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 at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.3%
- EPSS %ILE
- 17th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (8.7): severity, escalated by confirmed exploitation. This CVE's 8.7 is its impact severity (EG Severity), not escalated.
- EG Severity
- 8.7 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
- EG Likelihood
- 0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (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
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
August 3, 2026
Last Modified
October 23, 2026
Advisory Details (3)
Auto-updated Aug 3, 2026commit 4a12cf49675a (pyca/cryptography)
Fix landed in pyca/cryptography commit 4a12cf49675a — awaiting tagged release
https://github.com/pyca/cryptography/commit/4a12cf49675a184e47f912b00b04f3a629283582Add a signature validation budget during path construction
Fix merged in pyca/cryptography PR #14960 on 2026-06-07 — awaiting tagged release
https://github.com/pyca/cryptography/pull/14960Duplicate self-signed intermediates can cause exponential path-building · Advisory · pyca/cryptography · GitHub
https://github.com/pyca/cryptography/security/advisories/GHSA-jwv3-5hgf-82wwVendor Advisories for CVE-2026-69249(11)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:71658Red Hat Product SecurityHigh
Red Hat Security Advisory: python-cryptography security update
- RHSA-2026:71659Red Hat Product SecurityHigh
Red Hat Security Advisory: python-cryptography security update
- RHSA-2026:70995Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference 3.4.5 (rocm)
- RHSA-2026:70979Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference 3.4.5 (cuda)
- RHSA-2026:70969Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference 3.4.5 (spyre)
- RHSA-2026:70965Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference 3.4.5 (cpu)
- RHSA-2026:64795Red Hat Product SecurityHigh
Red Hat Security Advisory: python3.14-cryptography security update
- RHSA-2026:64774Red Hat Product SecurityHigh
Red Hat Security Advisory: python3.14-cryptography security update
- +3 more
Patch Availability(11)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-cryptography (46.0.5-1ubuntu2.2) @ resolute | 2026-10-27 | ubuntu |
| redhat | python-cryptography-0:43.0.0-4.el10_2.5 | 2026-09-24 | redhat |
| redhat | python-cryptography-0:43.0.0-4.el10_0.1 | 2026-09-24 | redhat |
| redhat | rhaii/vllm-spyre-rhel9:1790076141 | 2026-09-23 | redhat |
| redhat | rhaii/vllm-cuda-rhel9:1790090131 | 2026-09-23 | redhat |
| redhat | rhaii/vllm-rocm-rhel9:1790109620 | 2026-09-23 | redhat |
| redhat | rhaii/vllm-cpu-rhel9:1790075793 | 2026-09-23 | redhat |
| redhat | python3.14-cryptography-0:45.0.4-4.el10_2.5 | 2026-09-08 | redhat |
| redhat | python3.14-cryptography-0:45.0.4-4.el9_8.6 | 2026-09-08 | redhat |
| redhat | python-cryptography-main-50.0.0-1.hum1 | 2026-08-17 | redhat |
| pip | cryptography @ 49.0.0 (fixes >= 42.0.0, < 49.0.0) | — | ghsa |
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
(5 across 5 ecosystems)
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-cryptography | 3.3.2-1 ... 49.0.0-2 (34 versions) |
| — |
Debian:12(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-cryptography | 38.0.4-3 ... 49.0.0-2 (28 versions) |
| — |
Debian:13(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-cryptography | 43.0.0-3 ... 49.0.0-2 (17 versions) |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-cryptography | 43.0.0-3 ... 49.0.0-1~exp1 (14 versions) |
| — |
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| cryptography | 0.1 ... 48.0.1 (156 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(1)
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 11× in last 7d / 54× 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 100 of 214 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. None are among the latest 100 rows. The 114 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-11-01 07:40 UTCGHSA enrichmentGHSA-jwv3-5hgf-82ww · GitHub severity HIGH
- 2026-11-01 07:40 UTCEG score recompute
- 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.3% · 18th percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-27 21:07 UTCEG score recompute
- 2026-10-27 21:07 UTCVendor advisory
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-10-25 14:09 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-23 21:29 UTCEG score recompute
- 2026-10-23 21:29 UTCVendor advisory
- 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-20 18:37 UTCEG score recompute
- 2026-10-20 18:37 UTCVendor advisory
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-18 03:19 UTCEG score recompute
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- 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-13 09:55 UTCEG score recompute
- 2026-10-13 09:55 UTCVendor advisory
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-12 15:44 UTCEG score recompute
- 2026-10-11 19:29 UTCEG score recompute
- 2026-10-11 16:45 UTCEG score recompute
- 2026-10-11 14:05 UTCEG score recompute
- 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-06 23:45 UTCEG score recompute
- 2026-10-06 23:45 UTCVendor advisory
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-05 19:46 UTCEG score recompute
- 2026-10-05 19:46 UTCVendor advisory
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-04 23:44 UTCEG score recompute
- 2026-10-04 23:44 UTCVendor advisory
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-04 06:17 UTCEG score recompute
- 2026-10-04 06:17 UTCVendor advisory
- 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-03 02:12 UTCEG score recompute
- 2026-10-03 02:12 UTCVendor advisory
- 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-02 10:16 UTCEG score recompute
- 2026-10-02 10:16 UTCVendor advisory
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-10-01 15:39 UTCVendor advisory
- 2026-10-01 02:31 UTCEG score recompute
- 2026-10-01 02:31 UTCVendor advisory
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 15th percentile
- 2026-09-29 06:31 UTCEG score recompute
- 2026-09-29 06:31 UTCVendor advisory
- 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 14th percentile
- 2026-09-28 07:21 UTCVendor advisory
- 2026-09-27 18:13 UTCEG score recompute
- 2026-09-27 18:13 UTCVendor advisory
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 14th percentile
- 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
- 2026-09-25 04:45 UTCEG score recompute
- 2026-09-25 04:45 UTCVendor advisory
- 2026-09-24 00:16 UTCEG score recompute
- 2026-09-24 00:16 UTCVendor advisory
- 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 16th percentile
- 2026-09-23 10:53 UTCVendor advisory
- 2026-09-22 21:25 UTCEG score recompute
- 2026-09-22 21:25 UTCVendor advisory
- 2026-09-22 03:41 UTCEG score recompute
- 2026-09-22 03:41 UTCVendor advisory
- 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 16th percentile
- 2026-09-20 20:55 UTCEG score recompute
- 2026-09-20 20:55 UTCVendor advisory
- 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 16th percentile
- 2026-09-19 23:26 UTCEG score recompute
- 2026-09-19 23:26 UTCVendor advisory
- 2026-09-19 08:00 UTCEG score recompute
- 2026-09-19 08:00 UTCVendor advisory
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 17th percentile
- 2026-09-18 18:50 UTCVendor advisory
- 2026-09-18 05:26 UTCEG score recompute
- 2026-09-18 05:26 UTCVendor advisory
- 2026-09-17 16:18 UTCVendor advisory
- 2026-09-17 01:13 UTCEG score recompute
- 2026-09-17 01:13 UTCVendor advisory
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 16th percentile
- 2026-09-16 06:09 UTCEG score recompute
- 2026-09-16 06:09 UTCVendor advisory
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownDebian:11:python-cryptography
Same vendor
10 shownredhat:RHSA-2026:55543 · redhat:RHSA-2026:70965
Frequently asked(5)
What is CVE-2026-69249?
When was the CVE record for CVE-2026-69249 published?
Is CVE-2026-69249 actively exploited?
What is the CVSS score of CVE-2026-69249?
How do I remediate CVE-2026-69249?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-69249
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