cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prime-order subgroup of the curve. This missing validation allows an attacker to provide a public key point P from a small-order subgroup. This can lead to security issues in various situations, such as the most commonly used signature verification (ECDSA) and shared key negotiation (ECDH). When the victim computes the shared secret as S = [victim_private_key]P via ECDH, this leaks information about victim_private_key mod (small_subgroup_order). For curves with cofactor > 1, this reveals the least significant bits of the private key. When these weak public keys are used in ECDSA , it's easy to forge signatures on the small subgroup. Only SECT curves are impacted by this. This vulnerability is fixed in 46.0.5.
CVE-2026-26007
“—” beside the score: it is equal to NVD's CVSS score.
This medium-severity CVE scores 6.5 under NVD CVSS v3. EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-6238 (ENISA EUVD) · GHSA-r6ph-v2qm-q3c2 (GitHub Security Advisories) · PYSEC-2026-2141 (OSV.dev)Source: ENISA EUVD
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5MEDIUMmedium confidence
- EG Risk
- 29EG Risk 29/100
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)Severity65% × 45%Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.4% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's SSVC Automatable value: no (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.Exploitation none (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
- 0.4%
- EPSS %ILE
- 33rd
- 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 (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 0.4% 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade 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 every mission impact level.
A fix is available. Apply it within your standard update timelines.
Exploitation none (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
BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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
February 10, 2026
Last Modified
September 16, 2026
Advisory Details (10)
Auto-updated Jul 7, 2026Affected: Red Hat Enterprise Linux 9.
https://access.redhat.com/errata/RHSA-2026:19355Affected: Red Hat Enterprise Linux 9.
https://access.redhat.com/errata/RHSA-2026:13672Affected: Red Hat Enterprise Linux 8.
https://access.redhat.com/errata/RHSA-2026:12176oss-security - PyCA cryptography 46.0.5 released with fix for CVE-2026-26007
http://www.openwall.com/lists/oss-security/2026/02/10/4Subgroup Attack Due to Missing Subgroup Validation for SECT Curves · Advisory · pyca/cryptography · GitHub
https://github.com/pyca/cryptography/security/advisories/GHSA-r6ph-v2qm-q3c2commit 0eebb9dbb634 (pyca/cryptography)
Fix landed in pyca/cryptography commit 0eebb9dbb634 — awaiting tagged release
https://github.com/pyca/cryptography/commit/0eebb9dbb6343d9bc1d91e5a2482ed4e054a6d8cVendor Advisories for CVE-2026-26007(20)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:92574Red Hat Product SecurityHigh
Red Hat Security Advisory: Technical preview of the satellite/iop-vmaas-rhel9 container image
- RHSA-2026:92510Red Hat Product SecurityCritical
Red Hat Security Advisory: RHOAI 3.4.6 - Red Hat OpenShift AI
- RHSA-2026:22993Red Hat Product SecurityHigh
Red Hat Security Advisory: satellite/foreman-mcp-server-rhel9 container image available as a Technology Preview
- RHSA-2026:22330Red Hat Product SecurityHigh
Red Hat Security Advisory: fence-agents security update
- RHSA-2026:21517Red Hat Product SecurityHigh
Red Hat Security Advisory: fence-agents security update
- RHSA-2026:21431Red Hat Product SecurityHigh
Red Hat Security Advisory: fence-agents security update
- RHSA-2026:19355Red Hat Product SecurityHigh
Red Hat Security Advisory: fence-agents security update
- RHSA-2026:13672Red Hat Product SecurityHigh
Red Hat Security Advisory: fence-agents security update
- +12 more
Patch Availability(23)
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
(7 across 7 ecosystems)
Alpine:v3.23(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| py3-cryptography | — |
| — |
Alpine:v3.24(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| py3-cryptography | — |
| — |
Debian:11(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-cryptography | 3.3.2-1 ... 49.0.0-1~exp1 (33 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 |
| — |
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| python-cryptography | 43.0.0-3 ... 46.0.1-1~exp1 (8 versions) |
| — |
PyPI(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| cryptography | 0.1 ... 46.0.4 (150 versions) |
| — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Additional Vendor Advisories
(5)
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.
- Red HatRHSA-2026:2694IMPORTANT2026-02-10
RHSA-2026:2694 — Important
- Red HatRHSA-2026:5168IMPORTANT2026-02-10
RHSA-2026:5168 — Important
- Red HatRHSA-2026:5665IMPORTANT2026-02-10
RHSA-2026:5665 — Important
- UbuntuUSN-8087-1MEDIUM
python-cryptography vulnerability
- UbuntuUSN-8087-3MEDIUM
python-cryptography vulnerability
Data Freshness Timeline
(refreshed 10× in last 7d / 42× 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 99 of 225 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 126 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-11-01 07:56 UTCGHSA enrichmentGHSA-r6ph-v2qm-q3c2 · GitHub severity HIGH
- 2026-11-01 07:56 UTCEG score recompute
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-31 01:25 UTCOSV refresh
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
- 2026-10-25 14:39 UTCEG score recompute
- 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-23 04:28 UTCEG score recompute
- 2026-10-23 04:28 UTCVendor advisory
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-18 03:52 UTCEG score recompute
- 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 31st percentile
Show 74 moreShow fewer
- 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-12 16:18 UTCEG score recompute
- 2026-10-11 20:00 UTCEG score recompute
- 2026-10-11 17:14 UTCEG score recompute
- 2026-10-11 14:45 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
- 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 30th percentile
- 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-10-06 04:45 UTCOSV refresh
- 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.3% · 25th percentile
- 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.3% · 24th percentile
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-09-16 12:21 UTCEG score recompute
- 2026-09-16 12:21 UTCVendor advisory
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 28th percentile
- 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-09-10 13:23 UTCVendor advisory
- 2026-09-10 12:28 UTCEG score recompute
- 2026-09-10 12:28 UTCVendor advisory
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-09-03 23:16 UTCOSV refresh
- 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-17 12:22 UTCVendor advisory
- 2026-08-17 12:14 UTCEG score recompute
- 2026-08-17 12:14 UTCVendor advisory
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-14 10:29 UTCEG score recompute
- 2026-08-14 10:29 UTCVendor advisory
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 27th percentile
- 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-12 12:39 UTCVendor advisory
- 2026-08-12 12:14 UTCEG score recompute
- 2026-08-12 12:14 UTCVendor advisory
- 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-09 15:11 UTCEG score recompute
- 2026-08-09 15:11 UTCVendor advisory
- 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 26th percentile
- 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 26th percentile
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownAlpine:v3.23:py3-cryptography · Debian:11:python-cryptography
Same vendor
10 shownredhat:RHSA-2026:10184 · redhat:RHSA-2026:13512 · redhat:RHSA-2026:13545
Frequently asked(5)
What is CVE-2026-26007?
When was the CVE record for CVE-2026-26007 published?
Is CVE-2026-26007 actively exploited?
What is the CVSS score of CVE-2026-26007?
How do I remediate CVE-2026-26007?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-26007
Is Your Infrastructure Affected by CVE-2026-26007?
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