CVE-2020-7731

mediumpriority · track · 31EPSS 0.017 · 77 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.66% (77th) EPSS
CVSS 5 · medium
Is it mine?
4 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

This affects all versions <0.7.0 of package github.com/russellhaering/gosaml2. There is a crash on nil-pointer dereference caused by sending malformed XML signatures.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Psecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · report@snyk.ioexploitability 3.9 · impact 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV
v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-476USprimaryCWE-476US
03

affected products (4)

Products and version ranges known to be affected.

04

advisories (5)

Vendor and ecosystem advisories describing this.

  • GHSA-gq5r-cc4w-g8xfDuplicate Advisory: gosaml2 is vulnerable to NULL Pointer Dereference from malformed XML signatures2021-06-23ghsa · osvUS

    ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-prjq-f4q3-fvfr. This link is maintained to preserve external references. ## Original Description This affects all versions less than 0.7.0 of package github.com/russellhaering/gosaml2. There is a crash on null pointer dereference caused by sending malformed XML signatures.

  • GHSA-mqqv-chpx-vq25goxmldsig vulnerable to crash on nil-pointer dereference caused by sending malformed XML signatures2022-10-07ghsa · osvUS

    This affects all versions of package github.com/russellhaering/goxmldsig prior to 1.1.1. There is a crash on nil-pointer dereference caused by sending malformed XML signatures. This issue is patched in version 1.1.1.

  • GHSA-prjq-f4q3-fvfrgithub.com/russellhaering/gosaml2 is vulnerable to NULL Pointer Dereference2022-11-15ghsa · osvUS

    ### Impact In versions prior to v0.7.0 it was possible for an attacker to supply an invalid assertion which would trigger a panic due to a nil-pointer dereference. ### Patches The issue was patched in v0.7.0, released on March 2, 2022. ### Workarounds Callers to `gosaml2` can use `recover()` to handle panics to mitigate a potential DoS. ### References See issue [#59](https://github.com/russellhaering/gosaml2/issues/59) for details.

  • CVE-2020-77112020-08-23vendor · osvUS

    This affects all versions of package github.com/russellhaering/goxmldsig. There is a crash on nil-pointer dereference caused by sending malformed XML signatures.

  • GO-2020-0046Panic due to malformed XML digital signature in github.com/russellhaering/goxmldsig2021-04-14vendor · osvUS

    Due to a nil pointer dereference, a malformed XML Digital Signature can cause a panic during validation. If user supplied signatures are being validated, this may be used as a denial of service vector.

05

also known as (8)

Other names and identifiers for this entity.

06

sources

Which sources assert this record, and when.

cnnvdenisa_euvdosvnvdNVDCVE.orgMITRE
published 2021-04-30modified 2026-06-17
08

references (10)

External citations — patches, advisories, analysis.

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