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Fencer Vulns
high 8.1

CVE-2019-20329 json

OpenLambda 2019-09-10 allows DNS rebinding attacks against the OL server for the REST API on TCP port 5000.

published 2020-01-02 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-10883

cvss
8.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

OpenLambda 2019-09-10 allows DNS rebinding attacks against the OL server for the REST API on TCP port 5000.

Exploit prediction

0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/open-lambda/open-lambda/blob/9f7f935195ca74700c60ebc1ecfdaefad40d144b/src/common/config.go#L135 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/open-lambda/open-lambda/blob/9f7f935195ca74700c60ebc1ecfdaefad40d144b/src/server/lambdaServer.go#L92-L97 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.