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CVE-2020-26278

24
FAUCET Score

CVE-2020-26278 affects Weave Net versions prior to 2.8.0, stemming from an unnecessary "hostPID: true" setting in its Kubernetes DaemonSet manifest. This misconfiguration, when combined with another vulnerability allowing code execution within the Weave Net pod, could enable an attacker to gain full control over any host in the cluster. Rated with a CVSS score of 8.0 (HIGH), the exploit requires adjacent network access and high confidentiality, integrity, and availability impacts, but has high attack complexity. There is currently no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.8.0CPE matchmatch criteria
cpe:2.3:a:weave:weave:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.8MEDIUM

CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.3
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.74%
Probability of exploitation in next 30 days
EPSS Percentile
50.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0074 is in the 61st percentile among its peer group of 45 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / weaveworks/weave/blob/master/CHANGELOG.md
Release NotesThird Party Advisory
github.com / weaveworks/weave/commit/a0ac81b3b4cae6d0dcaf3732fd91cedefc89f720
PatchThird Party Advisory
github.com / weaveworks/weave/pull/3876
PatchThird Party Advisory
github.com / weaveworks/weave/security/advisories/GHSA-pg3p-v8c6-c6h3
Third Party Advisory