EUVD-2026-44852
GHSA-h7fr-r783-5g99
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
MITM network positioning elevates AC to H; missing host key verification enables both data interception (C:L) and content injection (I:L).
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Dulwich through 1.1.0 was found to be missing SSH host key verification in contrib/paramiko_vendor.py.
AnalysisAI
Missing SSH host key verification in Dulwich's paramiko vendor module exposes SSH connections to man-in-the-middle interception. The contrib/paramiko_vendor.py module used paramiko's MissingHostKeyPolicy, which silently accepts any server host key without checking it against known_hosts, allowing a network-positioned attacker to impersonate a legitimate SSH Git server. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires: (1) the target application must use Dulwich's contrib/paramiko_vendor.py SSH transport (ParamikoSSHVendor) - this is not the default transport and must be explicitly configured; (2) the attacker must be network-positioned to intercept and proxy TCP connections between the Dulwich client and the SSH server (on-path MITM). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, score 5.3) likely overstates ease of exploitation because AC:L does not adequately capture the network positioning required for a MITM attack. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with network access between a developer's workstation and the SSH Git server - for example, via ARP poisoning on a shared network segment or a rogue DNS response - intercepts the SSH handshake initiated by Dulwich and presents a fraudulent server key. Because Dulwich's paramiko vendor previously accepted any key without verification, the connection succeeds against the attacker's proxy, allowing credential theft (SSH passwords, git push/pull data) or injection of malicious repository content. … |
| Remediation | The upstream fix is available in GitHub pull request #2123 (https://github.com/jelmer/dulwich/pull/2123), which replaces the permissive MissingHostKeyPolicy with RejectPolicy and adds proper known_hosts loading. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Remote code execution in APScheduler (all versions through 3.10.x and 4.0.0a5) is achievable when applications deseriali
Unauthenticated remote OS command injection in MeiG Smart FORGE_SLT711 cellular gateway firmware MDM9607.LE.1.0-00110-ST
Unauthenticated API access in LalanaChami Pharmacy Management System (commit 5c3d028) allows remote attackers to dump al
In Citrix Cloud through 2025-11-10, an account with read-only access can trigger the beginning of a workflow for write o
Giflib 5.2.2 contains a buffer overflow in the EGifGCBToExtension function that fails to validate allocated memory when
Denial of service in GPAC's MP4Box multimedia tool (versions before 26.02.0) arises from a use-after-free in the gf_sei_
Arbitrary kernel memory read/write in Realtek rtl819x Jungle SDK Wi-Fi driver allows local unprivileged attackers to acc
Denial of service in GPAC's MP4Box/libgpac media importer (versions before 26.02.0) lets an attacker crash the tool by s
An issue in the parse_month function (/time/strptime.rs) of relibc commit ab6a2e allows attackers to cause a Denial of S
Denial of service in relibc (the Redox OS C standard library) at commit 61f42d allows attackers to crash a process by ge
An issue in the pthread_rwlockattr_setpshared() function of relibc commit 61f42d allows attackers to cause a Denial of S
Denial of service in relibc (the Redox OS C standard library implementation, commit 61f42d) lets attackers crash a proce
Same weakness CWE-295 – Improper Certificate Validation
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today