CVE-2026-58107

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 5.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (33rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated
5.5EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.5Exploit: No code on recordExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

The CVE record's CNA (Ericsson) lists Ericsson CodeChecker versions before 6.28.3 as affected. No release containing a fix is confirmed on record.

CodeChecker's massStoreRun processing path performs one-shot decompression of attacker-controlled, Base64-encoded zlib data without enforcing a maximum decompressed size.

An authenticated user with permission to store analysis runs can submit a highly compressed payload that expands to a significantly larger byte sequence. Because the entire decompressed output is materialized in memory before being written to a temporary file, a sufficiently large payload may exhaust process or host memory and consume substantial disk space, resulting in denial of service.

CVSS v3
5.5
EG Score
5.5MEDIUMmedium confidence
EG Risk
41
EG Risk 41/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity55% × 45%
The EG Score, 5.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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: No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines, and watch for a fix.
EPSS PROB
0.4%
EPSS %ILE
33rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines, and watch for a fix.

Exploitation public PoC (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.

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

August 28, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Aug 28, 2026
No fix on record yet. Sources: github.
GitHub advisoryMentions a patch (unverified)

Authenticated Remote Denial of Service via Unbounded zlib Decompression in massStoreRun · Advisory · Ericsson/codechecker · GitHub

https://github.com/Ericsson/codechecker/security/advisories/GHSA-w7jw-x567-hqr4

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 14× in last 7d / 54× 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.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-12 15:53 UTCEG score recompute
  4. 2026-10-11 19:37 UTCEG score recompute
  5. 2026-10-11 16:52 UTCEG score recompute
  6. 2026-10-11 14:14 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  9. 2026-10-10 00:55 UTCEG score recompute
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-09 02:42 UTCEG score recompute
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-08 00:53 UTCEG score recompute
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-06 15:55 UTCEG score recompute
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  18. 2026-10-05 17:26 UTCEG score recompute
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  20. 2026-10-03 22:10 UTCEG score recompute
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  22. 2026-10-03 00:28 UTCEG score recompute
  23. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  24. 2026-10-02 01:27 UTCEG score recompute
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
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  1. 2026-10-01 03:49 UTCEG score recompute
  2. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  3. 2026-09-30 06:11 UTCEG score recompute
  4. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  5. 2026-09-29 08:32 UTCEG score recompute
  6. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  7. 2026-09-28 10:53 UTCEG score recompute
  8. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-09-27 13:15 UTCEG score recompute
  10. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-09-26 15:37 UTCEG score recompute
  12. 2026-09-25 11:29 UTCEG score recompute
  13. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  14. 2026-09-24 13:34 UTCEG score recompute
  15. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  16. 2026-09-22 18:18 UTCEG score recompute
  17. 2026-09-20 22:03 UTCEG score recompute
  18. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  19. 2026-09-20 00:24 UTCEG score recompute
  20. 2026-09-19 02:46 UTCEG score recompute
  21. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  22. 2026-09-18 05:07 UTCEG score recompute
  23. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  24. 2026-09-17 07:29 UTCEG score recompute
  25. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  26. 2026-09-16 09:51 UTCEG score recompute
  27. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  28. 2026-09-15 12:12 UTCEG score recompute
  29. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-13 16:52 UTCEG score recompute
  31. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  32. 2026-09-12 19:14 UTCEG score recompute
  33. 2026-09-11 21:36 UTCEG score recompute
  34. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  35. 2026-09-10 23:58 UTCEG score recompute
  36. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  37. 2026-09-09 04:14 UTCEG score recompute
  38. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-09-07 08:43 UTCEG score recompute
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  41. 2026-09-06 11:05 UTCEG score recompute
  42. 2026-09-04 15:46 UTCEG score recompute
  43. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  44. 2026-09-02 20:24 UTCEG score recompute
  45. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  46. 2026-09-01 21:23 UTCEG score recompute
  47. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  48. 2026-09-01 11:19 UTCEG score recompute
  49. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  50. 2026-08-31 13:41 UTCEG score recompute
  51. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  52. 2026-08-30 15:49 UTCEG score recompute
  53. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  54. 2026-08-28 20:29 UTCEG score recompute
  55. 2026-08-28 19:44 UTCEG score recompute
  56. 2026-08-28 16:33 UTCEG score recompute
  57. 2026-08-28 15:29 UTCEG score recomputeFirst assessed: 5.5 MEDIUM
  58. 2026-08-28 15:25 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-58107?
CVE-2026-58107 is a medium-severity vulnerability; its CVE record was published on August 28, 2026. CodeChecker's massStoreRun processing path performs one-shot decompression of attacker-controlled, Base64-encoded zlib data without enforcing a maximum decompressed size. An authenticated user with permission to store analysis runs can submit a highly compressed payload that expands to a…
When was the CVE record for CVE-2026-58107 published?
The CVE record for CVE-2026-58107 was published on August 28, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-58107 actively exploited?
CVE-2026-58107 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58107?
CVE-2026-58107 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58107?
No fix for CVE-2026-58107 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix. The CVE record's CNA (Ericsson) lists Ericsson CodeChecker versions before 6.28.3 as affected. No release containing a fix is confirmed on record.

Dependency Blast Radius

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